UK Information, News, TV, Weather, Travel, Shopping...
DigiGuide, the best TV guide
This is what they call 'the best tv guide in the world' and with good reason. You can customise it to your own satisfaction. They will even send you SMS or e-mail reminders when your favourite programmes start. The downside is that there is a small subscription side, but if you recommend it to your friends the free trial period is extended by 60 days each time.
What's on BBC
This is a direct link to the BBC's what's on UK TV & radio page. It also includes what's on BBC radio.
What's on ITV
This is ITV's programme guide, but also gives you details of what's on Freeview, Sky and cable too.
whatsontv
This site give you the ability to search for Freeview, Sky and cable TV. You can also choose by your region.