Mobile coverage availability

The data displayed on mobile coverage availability uses source data made available by Ofcom which is based on data from the mobile operators about how strong they think signal levels are at every location in the UK. Each mobile operator has a slightly different approach to displaying coverage on its own map, including assumptions on the handsets used, levels of call reliability and the expected signal loss when indoors or in car. Because Ofcom brings all mobile operator data together in a single place and holds it to a single, independent standard, the mobile coverage availability information above may display different levels of coverage than those seen on the operators' websites. We would therefore recommend you also check the mobile provider's coverage checker. Mobile coverage data is created by coverage modelling, and since this is based on computer predictions is not error free.

Ofcom update the source data quarterly and the mobile network operators update theirs, but there may be times when the maps are based on slightly different data and therefore show different coverage.

Broadband coverage availability

The data displayed on broadband coverage availability uses source data from Ofcom. The predicted speeds provided in the API data are provided by the leading UK ISPs. We understand that Ofcom did not receive data for every premise in the UK, and that Ofcom continue to work with industry to fill in the gaps. If no predictions are shown for your address, this does not necessarily mean broadband is not available and we suggest that you check availability on the ISP websites.

For further information about the Ofcom APIs, read their FAQs available here: https://www.ofcom.org.uk/__data/assets/pdf_file/0012/130215/API-FAQs.pdf