Curry's have a special offer on the LG 37LH3000 LCD TV for £399 (Its definately online, I dont know if its instore as well). Originally priced @£549 and the cheapest I can find it elsewhere online is about £449. If you use Quidco, you get 3% back (as long as it tracks), bringing the total down to £387. This includes free standard delivery.
TV seems to have good reviews:http://www.testfreaks.co.uk/tvs/lg-37lh3000/