"In preparation for the 4G mobile phone network roll out, a company called at800 has been setup" "We expect residents will be contacting the Council about TV reception issues, particularly those who are connected to Council communal TV aerials. We have made arrangements at the CSC and advised resident officers on how to handle these calls." At https://at800.tv/find-out-more/about-us/): "at800 is a trademark of Digital Mobile Spectrum Limited (DMSL). We are funded by and represent the UK mobile operators who will be launching 4G mobile services at 800 MHz, EE, Telef?nica UK (O2), Three and Vodafone." There is more on their website about their tests. I assume they must have been approved by Ofcom, according to whom (at http://stakeholders.ofcom.org.uk/spectrum/spectrum-awards/): "The mobile network operators are responsible for ensuring that consumers continue to receive clear Digital Terrestrial Television signals following the roll out of 4G mobile services in the 800 MHz spectrum band. Visit http://www.at800.tv for more information." I see that someone has already made FoI inquiries of Ofcom about 4G interference and tests: https://www.whatdotheyknow.com/request/ofcom_model_for_4g_interference https://www.whatdotheyknow.com/request/4g_tests_conducted_by_at800com_a