Panasonic 42 plasma for under £500. Was on HUKD's a month ago for £550 from Currys. Older model now but still a great TV. Amazon have a discount code for an additional 5% using TVDISCO5 but only valid till the 21st July so price quoted does not include this.
Panasonic TX-P42G10B 42-inch Widescreen Full HD 1080p Plasma TV with Freesat £499.99 @ Amazon