Don't want to spend no more than about £120.

I can't find 24" LCD's. Don't think they exist. The closest would be 26" and i found a no name brand for £179 on a competitors site. Use Google Product search and search '26" LCD' and you should find it.
Will be average at best though. You will need at least £250 for a decent brand and decent quality 26" TV. The next up would be 32" which can be found for £299+ for a decent one.
£200 then. Can't go no more as Im redoing all my room so need money left for paint ec.
I think you can get 24" TV's, If not up to 30" but no more.
Thanks