Our area - Cental Southern Englandish went TV digital last year. It started off fine, but gradually more and more channels have become 'scrambled or unavailable'; Film4, Yesterday, various others ... since last week Channel 4 and Channel 4+1 have gone as well. We have a 'normal' TV and a digibox downstairs and a cheapish digital TV upstairs. The aerial is quite new.
Any ideas? I frequently try rescanning, but it doesn't help.