Fixed postcode: This file is based on a snap shot of data provided by the largest fixed broadband providers in the UK, at postcode level, for the period of June to July 2014. Fixed local authority: This file is based on a snap shot of data provided by the largest fixed broadband providers in the UK, at local authority level, for the period of June to July 2014. | WiFi postcode: This file provides information about WiFi networks that are purposely made available to members of the public, by postcode. WiFi local authority: This file provides information about WiFi networks that are purposely made available to members of the public, by local authority. Mobile: This file is based on a snap shot of data provided by the largest mobile operators in the UK for the period of June 2014 (3G and 4G) and March 2014 (2G). | DAB local authority: This file provides information about digital radio in the UK for the period of June to July 2014. DTT local authority: This file provides information about digital terrestrial television in the UK for the period of June to July 2014. |