I reside in the Whetstone, London area and am experiencing pixelated picture and distorted audio. I have been through all the recommended checks and nothing changed. I checked with my neighbour and she is also experiencing the same issues. This does seem to suggest a common problem and since engineering work was carried out at Barnet just recently wonder if something has upset the balance for us.
It is very frustrating as it happens at intervals of approx a few minutes in a random fashion throughout at all times of the day and evening.
I live in Cambridge and am having problems of freezing and pixilated pictures on BBC News and Alzazeera only, which I understand are served by the Sandy Heathtransmitter. We have been fitted with an aerial by the company which deals with FreeView aerial problems and the problem has reappeared after a period without problems.
Eve Steadman: Could be lots of things, but what leaping out at me is the fact that your just 27km from Sandy heath. High signal strength could well be a factor. If your readings are high, then search for 'too much of a good thing' on this website - it might help.