All closed cases - Ofcom

Mae'r cynnwys hwn ar gael yn Saesneg yn unig.

This section summarises the outcome of each case and gives general guidance on the approach, which we hope, will be of use to the reader. It is not an exhaustive inventory of precedent.

Please visit the National Archives to view an extensive list of closed cases.

All closed cases

Investigation into Royal Mail's quality of service performance in 2018/19

Investigation into Royal Mail’s compliance with the safeguard price control placed on second class letters

Investigation into BT’s compliance with the 118 price cap

Competition Act investigation regarding business parcel delivery services

Investigation into Post Office Limited’s charges for telephone calls using relay services

Investigation into Openreach's compliance with an information request issued to BT

Investigation into giffgaff about its compliance with metering and billing requirements

Investigation into BT Group’s compliance with an information request (administrative charges)

Donor Conveyance Charges for the period 2003 to 2008

Investigation into BT’s compliance with BCMR price regulation

Investigation into Royal Mail’s quality of service performance in 2017/18

Enforcement programme into Internet Service Providers traffic management practices

Investigation into O2’s compliance with a statutory information request

Investigation into communication providers’ compliance with BCMR 2019 information requests

Investigation into Lycamobile’s compliance with the mobile roaming regulations

Enforcement programme into compliance with obligations relating to emergency call access and resilience

Investigation into Telefónica UK Limited’s compliance with section 105A(4) of the Communications Act 2003

Own-initiative investigation into Barritel’s compliance with GC17 and the National Telephone Numbering Plan

Investigation into Cloud M’s provision of number portability

Investigation into Vonage’s compliance with obligations relating to emergency call access, network security and network availability

Investigation into EE’s compliance with Section 135 and 136 information requests

Investigation into Vodafone’s compliance with Section 135 and 136 information requests

Investigation into EE’s early termination charges

Investigation into Onestream’s compliance with mis-selling and slamming rules

Own-initiative investigation into Vodafone’s traffic management practices, and other practices covered by the EU Open Internet Access Regulation

Own initiative investigation into Hutchison 3G UK Limited (Three)’s compliance with the net neutrality and roaming regulations

Own-initiative investigation into Direct Save Telecom’s compliance with General Conditions 13 and 22 regarding its debt management practices and use of Cancel Other

Own initiative investigation into Care Free Communications Ltd concerning compliance with General Condition 14.5 – Dispute resolution schemes

Investigation into GW Telecom Limited (“Gateway”) concerning its compliance with its obligations relating to number portability

Investigation into BT’s compliance with a statutory information request

Investigation into Gateway’s compliance with statutory requests for information

Own-initiative investigation into Barritec’s compliance with GC17 and the National Telephone Numbering Plan

Own initiative investigation into Ecotel Networks (Ireland) Ltd concerning compliance with General Condition 14.5 – Dispute resolution schemes

Own initiative investigation into British Telecommunications plc concerning compliance with quality of service requirements relating to the provision of wholesale Ethernet services

Enforcement programme into early termination charges

Investigation into Virgin Media’s early termination charges

Own-initiative investigation into Three concerning its compliance with Section 105A(1) – (3) of the Communications Act 2003 and General Condition 3.1

Own-initiative investigation into True Telecom's compliance with GC22, GC9 and relevant consumer protection legislation

Own-initiative monitoring and enforcement programme into compliance with requirement to publicise details of services offered to end-users with disabilities.

Competition Act investigation into the sale of live UK audio-visual media rights to Premier League matches.

Own-initiative investigation into Reseller UK Ltd (trading under names including Atlas Business Services and Together Telecom) concerning compliance with General Condition 14.5 – Dispute Resolution Schemes

Dispute relating to TelNG’s compliance with General Condition 17 and the National Telephone Numbering Plan

British Sky Broadcasting plc (“Sky”) and British Telecommunications plc (“BT”) concerning charges for special fault investigation services (“SFIs”) and time related charges (“TRCs”)

Ofcom own initiative monitoring and enforcement programme into compliance with mobile termination rate (MTR) caps

Own-initiative monitoring and enforcement programme into cancellation and termination arrangements

Own-initiative investigation into Vodafone Limited ("Vodafone") in respect of compliance with General Condition 11 – Metering and Billing – as well as General Condition 14 – Codes of Practice and Dispute Resolution

TalkTalk Group (“TalkTalk”) and British Telecommunications plc (“BT”) concerning charges for special fault investigation services (“SFIs”) and time related charges (“TRCs”)

Own initiative investigation into Plusnet plc about its compliance with metering and billing requirements.

Own-initiative investigation into Royal Mail Group Limited concerning compliance with Designated USP Condition 1.9.1 regarding the quality of service performance of D+1 universal service mail

Own-initiative investigation into Vodafone Limited ("Vodafone") in respect of compliance with General Condition 11 – Metering and Billing, General Condition 23 – Sales and Marketing of Mobile Telephony Services and consumer protection legislation

Own-initiative investigation: Monitoring and enforcement of Fixed-Line Providers' compliance with rules concerning their sales and marketing activities and their use of Cancel Other

Own-initiative monitoring and enforcement programme in respect of compliance with General Condition 11.4

Complaint from British Telecommunications plc (“BT”) against British Sky Broadcasting Group plc (“Sky”) alleging abuse of a dominant position regarding the wholesale supply of Sky Sports 1 and 2 (“SS1&2”)

Enforcement programme into complaints handling

Own initiative investigation into EE about its compliance with metering and billing requirements

Own initiative investigation into British Telecommunications Plc (“BT”) concerning compliance with SMP Services Conditions 13A.8 and 8A.8

Monitoring and enforcement programme: General Condition 9 (requirement to offer contracts with minimum terms)

Own-initiative monitoring and enforcement programme into GC10 – Transparency and Publication of Information

Own-initiative investigation into Royal Mail Group Limited (“Royal Mail”) concerning compliance with USP Accounting Conditions 1.3.4, 1.4.4 and 1.5.5 and the Regulatory Accounting Guidelines regarding the provision of Audit Opinions

Own initiative investigation into British Telecommunications Plc (“BT”) concerning compliance with its cost-orientation obligations under General Condition 18.5

Dispute brought by Gamma against BT in relation to BT’s average porting conveyance charges

Dispute between Vodafone and BT concerning Deemed Consent in relation to the provision of Ethernet Services

Investigation into BT’s use of the Deemed Consent Mechanism in relation to the provision of Ethernet Services

Own-initiative investigation into Universal Utilities t/a Unicom ("Unicom") in respect of compliance with General Condition 24

Re-determination of disputes relating to BT’s charges for Ethernet services (remitted by the CAT)

Own-initiative investigation into EE Limited (trading as EE, Orange and T-Mobile) concerning compliance with paragraph 14.4 of General Condition 14 – Code of Practice and Dispute Resolution

Own-initiative investigation into Sky’s compliance with rules about cancellation and termination arrangements

Complaint from Whistl UK Limited in relation to the prices, terms and conditions on which Royal Mail plc is offering to provide access to certain letter delivery services

Own-initiative Monitoring and Enforcement Programme: Communications Providers’ compliance with GC14.5 – Dispute Resolution Schemes

Own-initiative investigation into compliance with General Condition 15 and the provision of next generation text relay services

Dispute relating to BT’s proposed payments for 080 call origination

Own-initiative investigation into KCOM Group concerning its compliance with Section 105A(1) – (3) of the Communications Act 2003 and General Condition 3.1

Disputes between BT and each of EE and Three regarding BT’s wholesale termination charges for calls to 03 numbers

Dispute between Cloud9 and Vodafone concerning connection and on-going charges for ARP access

Own-initiative investigation into Hutchison 3G UK Limited (trading as Three) concerning compliance with paragraph 14.4 of General Condition 14 – Code of Practice and Dispute Resolution

Complaint from TalkTalk Telecom Group plc against BT Group plc about alleged margin squeeze in superfast broadband pricing

Dispute between Cloud9 and Telefónica concerning additional charges for delivery of roaming calls

Additional Charges – enforcement and monitoring programme to assess compliance with Ofcom Guidance

Own-initiative investigation: Monitoring and enforcement of Fixed-Line Provider’s compliance with rules concerning their sales and marketing activities and their use of Cancel Other

Own-initiative investigation into Jason Clifford trading as UK Free Software Network concerning compliance with General Condition 14.5 –Dispute Resolution Schemes

Dispute referred by Level 3 about BT’s historic PPC charges

Dispute referred by Gamma about BT’s historic charges for Interconnect Extension Circuits

Dispute between Sky and BT relating to BT’s provision of MPF New Provide

Dispute between TalkTalk and BT relating to BT’s provision of MPF New Provide

BT remittal data request

Ofcom own-initiative review of the level of donor conveyance charges (DCCs)

Own-initiative investigation into BT’s compliance with section 5.44.2(c)(ii) of Undertakings offered by BT and accepted by Ofcom in accordance with section 154 of the Enterprise Act 2002

Investigation into BT’s compliance with statutory requests for information

Ofcom own initiative enforcement programme into wholesale mobile call termination rates

Dispute relating to the “Oftel Interest Rate” contained within BT’s Standard Interconnect Agreement (“SIA”).

Dispute between TalkTalk Group and BT Openreach about single jumpered MPF

Own-initiative investigation into Supatel Limited, trading as TimeTalk, concerning its compliance with General Condition 24 – Sales and Marketing of Fixed-Line Telecommunications Services

Own-initiative investigation into Etico Solutions Limited concerning its compliance with General Condition 22 – Service Migrations

Dispute relating to BT’s Standard Interconnect Agreement (“SIA”)

Complaint from Thus Plc and Gamma Telecom Limited against BT about alleged margin squeeze in wholesale call pricing

Dispute between Everything Everywhere and BT regarding termination charges for 080 numbers

Dispute between Everything Everywhere and BT regarding termination charges for 0844, 0843, 0871, 0872, 0873 and 09 number ranges

Dispute relating to whether Openreach offered MPF New Provide to TalkTalk Telecom Group PLC on fair and reasonable terms and conditions

Dispute relating to LLU MPF to WLR + LLU SMPF simultaneous migration offer

Average charges in BT’s 2010/2011 regulatory financial statements (“RFS”)

Disputes between BT and each of Sky, TalkTalk and Virgin Media about BT charges for Ethernet services

Dispute relating to BT’s charges for WES

Disputes from THUS, Cable & Wireless, Global Crossing, Verizon and Virgin Media against BT about the level of charges for partial private circuits

Dispute between COLT and BT about the level of charges for partial private circuits

Dispute between Cable & Wireless and BT about BT’s charges for Ethernet services

Dispute relating to BT’s POLOs for 0845 call termination

Own-initiative investigation into Everything Everywhere’s (trading as Orange) compliance with General Condition 23 in respect of its sales and marketing practices

Monitoring and Enforcement programme in respect of the international calling card industry

Re-determination of disputes relating to BT’s termination rates for 080 and 0845/70 calls (remitted by the CAT)

Own-initiative investigation into Nowtel Management Limited in respect of the sale and advertisement of its international calling cards

Dispute relating to MPF rental charges

The terms on which Thomson obtains data from BT's Operator Services Information System (OSIS) database

Dispute between O2 and each of Vodafone and H3G about wholesale mobile voice call termination charges in October 2010

Own-initiative investigation into TalkTalk Group’s billing for cancelled services

Dispute between Openreach and each of Opal Telecom and British Sky Broadcasting Limited (Sky) about LLU charges

Own-initiative investigation into the TalkTalk Group concerning compliance with General Condition 24 – sales and marketing of fixed-line telecommunications services

Dispute relating to sub-loop unbundling charges

Own-initiative investigation into TalkTalk Group concerning compliance with General Condition 4 (Emergency Calls)

Own-initiative investigation into Continental Telecom LTD - adherence to its Code of Practice governing sales and marketing,

Own-initiative investigation into KCT UK Limited concerning compliance with General Condition 24 – sales and marketing of fixed-line telecommunications services

Investigation into a complaint by Virgin against Sky in relation to the contract for wholesale supply of Sky Sports 1 and 2 HD

Dispute between Everything Everywhere and BT about 03 termination rates

Own-initiative investigation into Lycatel in respect of the sale and advertisement of its international calling cards

Dispute between Colt and BT about geographic termination rates

Investigation into complaint by TUTV against Sky in relation to the contract for wholesale supply of Sky Sports 1 and 2

Dispute between TelNG and Gamma about certain interconnection charges

Freeserve.com plc – BT’s residential broadband pricing

Dispute between BT and each of Vodafone, T-Mobile, O2, Orange, H3G and Everything Everywhere about BTs termination charges for 0845 and 0870 calls

Disputes between BT and each of Cable & Wireless, Gamma, Colt, Verizon, and Opal regarding the repayment by BT of certain charges for the transit of traffic

Disputes between H3G and each of Everything Everywhere, O2, Orange, T-Mobile and Vodafone about mobile termination rates for calls to ported numbers

Dispute between Stour Marine Ltd and O2 UK Ltd concerning termination rates

Own-initiative investigation into Telephonics Integrated Telephony Limited about sales and marketing and the use of information obtained during the transfer process

Request by Digital 3 and 4 Ltd (“D3&4”) and Channel Five Broadcasting Limited (“Five”) for a determination by Ofcom of the price payable by Five for the use of reserved capacity on Multiplex 2

Own-initiative pre-enforcement programme into Mobile Network Operators’ and Mobile Virtual Network Operators’ compliance with General Condition 18.1 in respect of the provision of Porting Authorisation Codes

Dispute between Cable & Wireless and BT about BT’s NTS call termination charges for ported numbers

Ofcom own-initiative investigation into Plus Save LTD’s compliance with consumer protection legislation and General Conditions under the Communications Act 2003

Disputes between BT and each of T-Mobile, Vodafone, O2 and Orange about BT’s termination charges for 080 calls

Investigation into a complaint by BT against Sky in relation to the contract for wholesale supply of Sky Sports 1 and 2

Dispute between Opal Telecom and BT about BTs Average Porting Conveyance Charge (APCC)

Own-initiative monitoring and enforcement programme into Mobile Service Provider’s compliance with General Condition 23 in respect of their sales and marketing practices

Own-initiative investigation: Monitoring and enforcement of mis-selling and conduct relating to the transfer of customers between communications providers

Redetermination of a dispute about per-customer line transaction charges for Carrier Pre-Selection

Own-initiative investigation into Talk Plus Telecom Limited - adherence with its Code of Practice for sales and marketing and conduct relating to the transfer of customers between communications providers

Own initiative investigation into Infolines about compliance with Electronic Communications Code requirements

Own-initiative investigation into Telephonics Integrated Telephony Limited – adherence with its Code of Practice for sales and marketing

Own-initiative enforcement programme to give effect to General Condition 22 (Service Migrations)

Dispute between Opal Telecom and BT about Opal’s Fixed Geographic Termination Rates

Dispute between BT Wholesale and various operators about changes to AIT terms

Own initiative investigation into In Focus about compliance with Electronic Communications Code requirements

Dispute about per-customer line transaction charges for Carrier Pre-Selection

Dispute between BT and various providers about 0870 termination rates

Own-initiative investigation into Axis Telecom Limited - adherence with its Code of Practice for sales and marketing and conduct relating to the transfer of customers between communications providers.

Dispute between Cable & Wireless and T-Mobile about termination rates

Second own-initiative enforcement programme: compliance with General Condition 10 (“GC 10”) and General Condition 14.2 (“GC 14.2”)

Additional Charges Pre-enforcement Programme

Own-initiative investigation against THUS plc about compliance with General Condition 4 (Emergency Call Numbers)

Own-initiative enforcement programme to give effect to General Condition 4 (Emergency Call Numbers)

Dispute between Mapesbury Communications and T-Mobile about mobile termination rates

Dispute between The Number UK Ltd and BT about charges for directory enquiry information (OSIS)

Re-determination of mobile termination rates disputes

Investigation into Phones 4U Limited regarding allegations of misconduct in the retail selling and marketing of telecommunications goods and services

Investigation into Just Telecomms UK Ltd (trading as Lo-Rate Telecom) regarding allegations of misconduct in selling and marketing of telecommunications services

Super-complaint on the cost of calls made by prisoners

Second Ofcom own-initiative investigation against various Communications Providers about enforcement of the requirement to implement and comply with a Dispute Resolution Scheme

Complaint from Energis Communications Ltd about BT's charges for NTS call termination

Own-initiative investigation into Universal Utilities plc trading as Unicom - adherence to its Code of Practice governing sales and marketing activity

Own-initiative investigation, following information gathered through Ofcom’s enforcement programme: ‘Monitoring and enforcement of the requirements regarding Codes of Practice for Sales and Marketing’

Own-initiative investigation against Virgin Media about compliance with General Condition 4 (Emergency Call Numbers)

Dispute between BT and Conduit about charges for directory information (OSIS)

Own-initiative investigation into Economy Calls Limited – adherence to its Code of Practice governing sales and marketing activity

Investigation into Platinum Telecom UK Ltd regarding allegations of misconduct in selling and marketing of telecommunications services

Own-initiative investigation into Genesis Communications Limited: failure to pay Ofcom’s administrative charges

Disputes between H3G and each of O2, Orange and T-Mobile about donor conveyance charges

Dispute between Cable & Wireless Access Limited and BT about BT's charges for connecting new customers to fully unbundled local loops

Own-initiative investigation into Primus Telecommunications Limited: failure to pay Ofcom’s administrative charges

Own-initiative investigation into Telecom Billing Services Ltd about suspected persistent network misuse

Disputes between Hutchison 3G and each of Orange Personal Communications Services and O2 relating to call termination rates

Own-initiative investigation into the possible misuse of 087 numbers

Disputes between T-Mobile and BT, O2 and BT, Hutchison 3G and BT and BT and each of Hutchison 3G, Orange Personal Communications Services and Vodafone relating to call termination rates

Own-initiative investigation into the Post Office Limited - adherence to its Code of Practice governing sales and marketing activity

Complaint from Independent Media Support Limited against BBC Broadcast about provision of media access services

Dispute between: BT Wholesale and various communications providers about NTS POLO charges

Own-initiative investigation: Monitoring and enforcement of the requirements regarding Codes of Practice for Sales and Marketing

Mercury’s implementation and compliance with a Dispute Resolution Scheme

BT complaint about an alleged breach of General Condition 18 by Spacetel

Dispute between Cable & Wireless Access Limited and BT relating to BT’s charges for connecting new customers to fully unbundled local loops

BT complaint against Unicom regarding conduct relating to the transfer of customers between communications providers

Own-initiative investigation into Switch Call Limited and Switch Services Limited about potential misuse of 070 numbers

Own initiative investigation into possible misuse of 070 personal numbers allocated to 1RT Group Ltd

Dispute between Rapture TV and Sky about EPG charges

Own-initiative enforcement programme into compliance with General Condition 14.2 ("GC14.2")

Complaint by BT about WLR transfer orders placed by Scottish & Southern Energy

Dispute between Thus and BT about payment terms for PPC, IEC and IBC products

Complaint from The Carphone Warehouse Group plc about BT’s compliance with General Condition 1.2 in relation to verification calls

Own-initiative investigation into XLN Telecom Ltd regarding allegations of misconduct in selling and marketing of telecommunications services

Dispute between Hay Systems Limited and T-Mobile UK Limited about SMS termination via Signalling System 7

Own-initiative investigation into Advanced Data Services (Europe) Ltd, also trading as “Euro1Net”, about compliance with a Code of Practice for handling complaints and the requirement to implement and comply with a Dispute Resolution Scheme

Own-initiative investigation into E7even's billing for services and adherence to its Code of Practice for handling complaints

Complaint against BT about the pricing of cordless fixed-line telephones

Dispute between ntl and BT about BT’s charge for its Text Direct service

Dispute between BT and various communications providers about INCA/CLI

Dispute about geographic call termination reciprocity agreement

Complaint from Education Digital Management Ltd about the repositioning of Teachers TV in Sky's EPG

Own-initiative investigation against Patientline Limited about misuse of personal numbers

Enforcement of the requirement to implement and comply with a Dispute Resolution Scheme

Dispute between Opal Telecom and Openreach about Local Loop Unbundling migration charges

Dispute between Opal Telecom and BT about retrospective CPS charges

Consumer complaint against UK Online about unfair contract terms

Consumer complaint against 3 about unfair contract terms

Own initiative investigation into possible persistent misuse of networks or services and possible misuse of 070 personal numbers by TelXL

Giacom complaint against Kingston Communications about failure to provide Wholesale ADSL access

Investigation into FreeCall UK Ltd and Orb Communications Ltd regarding allegations of misconduct in selling and marketing of telecommunications services

Second ICSTIS complaint regarding the failure of Talkline Communications Ltd to comply with ICSTIS Directions

Investigation into Universal Telecom Limited regarding allegations of misconduct in selling and marketing of telecommunications services

Europacom.net complaint against MCI in connection with requests for the porting of numbers

Ofcom own-initiative investigation into the price of making telephone calls to hospital patients

Own-initiative investigation against BT Wholesale about PPC trunk charges

ICSTIS complaint regarding failure of Talkline Communications Ltd to comply with ICSTIS Directions

Own-initiative investigation regarding the annoyance caused to consumers by silent and abandoned calls

Own-initiative investigation about MKD Holdings Ltd regarding silent calls

Complaint about the joint selling of national radio broadcast rights to Football Association Challenge Cup ("FA Cup") matches by the Football Association to a single purchaser

Own-initiative investigation into Bulldog Communications’ billing for services and adherence to its Code of Practice for handling complaints

ICSTIS complaint regarding failure of Coulomb Ltd to comply with ICSTIS Directions

Complaint against Intercity Mobile Communications about number portability

ICSTIS complaint regarding failure of Telecom One to comply with Directions

Dispute between SDN Limited and Channel Five Broadcasting in relation to the charges payable to SDN for the use of guaranteed capacity on Multiplex A

Uniworld complaint against Media, Marketing & Promotions about refusal to provide Number Portability and Portability

Own-initiative investigation about enforcement of General Condition 1.2 regarding losing CPS Providers.

ICSTIS complaint regarding failure of Allied Telecommunications to comply with Directions

Switch Call Ltd - alleged misuse of personal numbers

ITV complaint about Sky's proposed charge for ITV1 regionalisation

Own Initiative investigation against Genesis Communications about number portability

Consumer complaint against Nexus Data Systems Ltd about unfair contract terms

Consumer complaint against Namesco Limited about unfair contract terms

Dispute between 4 Payphone Operators and BT about Payphone Access Charge collection terms

Consumer complaint against O2 about unfair contract terms

Complaint from Islington Council Trading Standards against Internet Telecommunications Plc about unfair contract terms

Reinvestigation of complaint from VIP Communications Ltd against T-Mobile Ltd about an alleged refusal to supply

Reinvestigation of complaint from Floe Telecom Ltd against Vodafone Ltd about an alleged refusal to supply

Dispute between Vodafone and BT about geographic number portability

Dispute between Orange and BT - CSI Links connection and rental charges cost sharing

Complaint from Gamma Telecom Limited against BT Wholesale about reduced rates for Wholesale Calls from 1 December 2004

Complaint from BT against Talk Talk about an unfair contract term

Consumer complaint against DeeNine Internet Services Limited about unfair contract terms

Dispute between: THUS plc (“THUS”), COLT Telecommunications ("COLT") and British Telecommunications plc (“BT”)

Dispute from BT Wholesale against Telewest about reciprocal arrangements for call termination rates

Complaint from Cumbria Highways against Omne Telecommunications Limited about Funds for Liabilities

Dispute between BT and various communications providers about cancellations during the CPS and WLR transfer process

Complaint from BT against PNC about number portability

Opal Telecom: alleged breach of the Numbering Condition of Entitlement

Number Portability complaint from Eurocall Ltd against Core ISP

Investigation into InterCity Mobile's number portability process

Complaint from Telepay Ltd against Vodafone about alleged misuse of personal numbers

Complaint from Swedia Networks UK Ltd against BT Wholesale about terms in the Access Network Facilities (ANF) agreement

Alleged misuse of Personal Numbering by Opera Telecom Limited

Own-initiative investigation against Redstone about alleged misuse of personal numbers

Possible misuse of a Personal Number by YAC Ltd

Own-initiative investigation against unknown end-user and/or Routo Telecommunications Limited about CLI dumping

Digital Serve ISP: alleged unfair contract terms

Decision of the Director General of Telecommunications BT publishing its 118500 directory enquiries number on the front of the BT phonebook.

Freeserve.com plc - BTOpenworld's Broadband Pricing

MediaWays.uk.Limited and Thus plc complaint concerning BT price changes to virtual path CBR and VBrt classes of service

Complaint from VIP Communications Ltd against T-Mobile Ltd about disconnection of services

Complaint from FDM Technologies against BT about delayed provision of broadband services

BT's volume discount scheme for IPStream and DataStream

Suspected discrimination by BT in the provision of customer order handling procedures for BT Broadband access products

Tesco.net: alleged unfair contract terms

Alleged winback call by BT towards a Carrier Pre-Selection ("CPS") customer

'Silent Calls' - Complaints regarding the making of silent calls

Complaints against BT from 118866 and Centrica concerning treatment of telephone directory enquiry (DQ) numbers in the BT Phonebook

Use of information for marketing activity directed at Wholesale Line Rental ("WLR")

Complaint against Patientline about alleged misuse of Personal Numbers

Own initiative investigation into Inclarity's possible misuse of Personal Numbers

Suspected margin squeeze by Vodafone, 02, Orange & T-Mobile

Dispute between BT Wholesale and various communications providers about NTS POLO charges

Dispute concerning various aspects of BT's LLU procedures and terms and conditions

Dispute between Apple Telecom Europe Limited and BT concerning the level of security deposit required for interconnection

Dispute between Cable & Wireless and BT - BT's Product Management, Policy and Planning ('PPP') charge

Investigation into WLR business ISDN2 pricing

Investigation against Interphone about possible breaches of the General Conditions of Entitlement

DQ Advertisement on the cover of the Phonebook

Own-initiative investigation against Gio Internet Limited about a potential breach of General Condition 14

Own-initiative investigation into BT blocking WLR orders for customers on certain BT Retail tariffs

Complaint against Vodafone about unfair contract terms and misleading promotional literature

Dispute referred by Energis against BT about retrospective application of reduced WLR ISDN2 charge (Updated)

Complaint from Designbyte Ltd re BT's free provision of BT Analyst

Consumer complaint against Bulldog Communications about unfair contract terms

Investigation into the accuracy of Cheers International's billing system and/or failure to publish full details of its tariffs and charges

Investigation into potential over-charging on pre-paid calling cards

Own-initiative investigation against unknown end-users and/or TelXL Ltd and Xero9 Ltd about possible misuse of personal numbers and possible persistent misuse of networks or services

Complaint against BT about Wholesale Line Rental ("WLR") marketing activities

BT 0845 & 0870 retail price change- Suspected Internet Service Provider (ISP) margin squeeze

Consumer complaint against O2 about unfair contract terms

Consumer complaint against O2 about unfair contract terms

Consumer complaint against Wanadoo about unfair contract terms

Complaint against Easyrentafone about refusal to provide number portability

Consumer complaint against Opera Telecom and Switch Call Ltd about potential misuse of personal numbers

Dispute between BT and various operators about NTS discounts

IPStream to DataStream Migration / Equal terms for DataStream

Dispute between Energis and BT about short haul data services (SHDS) and dense wave division multiplexing (DWDM)

Own-initiative investigation against BT about potential anti-competitive exclusionary behaviour

BT's tariff structure and pricing for its 'NetStream 16' circuits

Closed complaints (2015 to present)

Investigation into EE’s compliance with Section 135 and 136 information requests

CW/01232/09/18

Investigation into Vodafone’s compliance with Section 135 and 136 information requests

CW/01231/09/18

Investigation into giffgaff about its compliance with metering and billing requireme

CW/01230/09/18

Investigation into Royal Mail’s quality of service performance

CW/01221/05/18

Investigation into Vonage’s compliance with obligations relating to emergency call access, network security and network availability

CW/01216/03/18

Enforcement programme into Internet Service Providers traffic management practices

CW/01210/12/17

Investigation into BT’s compliance with a statutory information request

CW/01208/09/17

Investigation into Lycamobile’s compliance with the mobile roaming regulations

CW/01207/09/17

Own-initiative investigation into Barritel’s compliance with GC17 and the National Telephone Numbering Plan

CW/01203/08/17

Own-initiative investigation into Barritec’s compliance with GC17 and the National Telephone Numbering Plan

CW/01202/07/17

Investigation into Gateway’s compliance with statutory requests for information

CW/01201/07/17

Enforcement programme into early termination charges

CW/01199/06/17

Investigation into Virgin Media’s early termination charges

CW/01198/06/17

Own initiative investigation into British Telecommunications plc concerning compliance with quality of service requirements relating to the provision of wholesale Ethernet services

CW/01196/05/17

Investigation into GW Telecom Limited (“Gateway”) concerning its compliance with its obligations relating to number portability

CW/01195/05/17

Own-initiative monitoring and enforcement programme into compliance with mobile termination rate (MTR) caps

CW/01193/04/17

Investigation into BT’s compliance with statutory requests for information

CW/01192/03/17

Own-initiative investigation into Three concerning its compliance with Section 105A(1) – (3) of the Communications Act 2003 and General Condition 3.1

CW/01190/11/16

Own-initiative investigation into True Telecom's compliance with GC22, GC9 and relevant consumer protection legislation

CW/01189/10/16

Own-initiative investigation into Plusnet plc about its compliance with metering and billing requirements

CW/01178/04/16

Own-initiative investigation into KCOM Group concerning its compliance with Section 105A(1) – (3) of the Communications Act 2003 and General Condition 3.1

CW/01176/02/16

Own-initiative investigation into EE about its compliance with metering and billing requirements

CW/01174/12/15

Own-initiative investigation into British Telecommunications Plc (“BT”) concerning compliance with its cost-orientation obligations under General Condition 18.5

CW/01172/11/15

Investigation into BT’s use of the Deemed Consent Mechanism in relation to the provision of Ethernet Services

CW/01170/11/15

Own-initiative investigation into Reseller UK Ltd (trading under names including Atlas Business Services and Together Telecom) concerning compliance with General Condition 14.5 – Dispute Resolution Schemes

CW/01167/10/15

Own-initiative investigation into Sky’s compliance with rules about cancellation and termination arrangements

CW/01163/08/15

Own-initiative investigation into Vodafone Limited ("Vodafone") in respect of compliance with General Condition 11 – Metering and Billing, General Condition 23 – Sales and Marketing of Mobile Telephony Services and consumer protection legislation

CW/01160/06/15

Own-initiative investigation into Vodafone Limited ("Vodafone") in respect of compliance with General Condition 11 – Metering and Billing – as well as General Condition 14 – Codes of Practice and Dispute Resolution

CW/01159/06/15

Own-initiative monitoring and enforcement programme into cancellation and termination arrangements

CW/01158/06/15

Own-initiative enforcement programme into wholesale mobile call termination rates

CW/ 01115/11/13

Enforcement programme into compliance with obligations relating to emergency call access and resilience

CW/00996/08/08

Closed disputes (2015 to present)

TalkTalk Group (“TalkTalk”) and British Telecommunications plc (“BT”) concerning charges for special fault investigation services (“SFIs”) and time related charges (“TRCs”)

British Sky Broadcasting plc (“Sky”) and British Telecommunications plc (“BT”) concerning charges for special fault investigation services (“SFIs”) and time related charges (“TRCs”)

Re-determination of disputes relating to BT’s charges for Ethernet services (remitted by the CAT)

Rhoi barn am y dudalen hon

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