Lots of stuff is available online, and provided you aren't watching live telly online or elsewhere, at least you can save on your licence fee. Not a great consolation, I know, but perhaps a slight silver lining. As TykeMan mentions, Lovefilm is an option, and it streams films to computers, and starting next month, PS3s.
Are you sure there's not an aerial on the roof? I grew up in the mountains, and if you didn't have cable or a monstrous dish in your yard (this was before the mini-dishes), you used an aerial to boost signal. I know they're still about here because we plugged our Free-view into one in our old flat.