Restricted services are radio services with small coverage areas that are used to broadcast at events, or within a particular establishment or other locations in the UK. Examples include:
- dedicated radio services for religious observances such as Ramadan;
- radio services for hospitals and universities;
- drive-in movie soundtracks; and
- commentary for events.
If you are looking to broadcast a restricted service on AM or FM, you'll find below the application form and other information you need to apply.
Changes to the licensing of audio distribution systems
If you wish to broadcast a restricted service using frequencies outside the FM or AM frequency bands,[1] there have been some important changes to the licensing requirements.
Previously, an Audio Distribution Systems Restricted Service Licence (ADSRSL) was needed (normally alongside a Wireless Telegraphy Act licence) to operate restricted services broadcasting on frequencies outside the FM or AM frequency bands. Examples of this included services such as referee's comments or commentary at a sports event, or translations at a conference. However, changes in legislation mean from 1 May 2026, you no longer need an audio distribution systems restricted service licence (“ADSRSL licence”) to broadcast a restricted service on frequencies outside the FM and AM bands. You will normally still require a Wireless Telegraphy Act licence, which you can apply for separately through Ofcom’s Programme-Making and Special Events (PMSE) team.
Additionally, if you plan to broadcast a restricted service on FM frequencies at very low power (under 50 nanowatts), a Broadcasting Act licence is no longer required. A WT Act licence is not required where the power is under 50 nanowatts and the device is compliant with Ofcom’s Interface Requirement IR2030.
If you currently hold an ADSRSL licence, Ofcom will be in touch to explain the next steps.
For more information and to apply for a Wireless Telegraphy Act licence, please visit the Ofcom website or contact the PMSE team directly.
[1] The AM broadcasting frequency band is 526.5 kilohertz to 1.6065 megahertz. The FM broadcasting frequency band is 87.5 to 108 megahertz.