If you watch freeview, you need to read this.
What's happening and why?
New 4g mobile services are coming to your area soon.
They operate at 800MHz, a similar frequency to Freeview, and so may cause problems to your Freeview service such as loss of sound, blocky images or loss of TV channels.
To overcome this problem, you will soon receive -Free Of Charge- an at800 filter. it is straightforward to fit and connects between your TV aerial and your television , set top box or signal booster.
(Only one free of charge at800 filter per household.www.at800.tv
Call 0333 31 31 800