Mobile signal strength measurement data from our spectrum assurance vehicles

23 November 2021

Ofcom regularly carries out mobile drive testing to improve our understanding of mobile coverage in the UK. It also helps us make sure that mobile network operators' predictions are accurate across different regions and terrains.

We have been compiling the 4G- and 5G-specific signal strength measurement data that our spectrum assurance vehicles capture along roads in England, Scotland and Wales. We plan to include Northern Ireland in future.

Under our open data policy, we are releasing the data we have collected since Summer 2020. This is on a trial basis, so that the policymakers and other interested parties can use the information.

Alongside the data, we have published a map showing the routes our vehicles have taken – in other words, the locations for which data is available. We have also published our methodology (PDF, 575.3 KB).

Please let us know if you find this data useful by contacting us at drivetestingdata@ofcom.org.uk. We will use your feedback to decide whether or not to publish more data in future.

Data Last updated
4G LTE mobile signal strength measurement data (2020) 23 November 2021
4G LTE mobile signal strength measurement data (2021) 23 November 2021
5G NR mobile signal strength measurement data (2020) 23 November 2021
5G NR mobile signal strength measurement data (December 2020 to May 2021) 23 November 2021
5G NR mobile signal strength measurement data (June 2021 to September 2021) 23 November 2021