Online the other day because my mate had picked one of these up from the Sony Centre at £499.99, that seemed like a pretty good price but thought I would still search around. Then came across this website, company is called Tec7- they are a concession in The House of Fraser department stores. Price is £439.99 in store (despite saying £449.99 online), and it comes with a free 5 year warranty.
I got mine from the House of Fraser in Bristol, but assume it is a nationwide deal. The guys in the Bristol store were very helpful, I had done my research so knew it was a good set at great value, but they answered my remaining questions. Unfortunately, the TV isn't available to buy online, bit if you click the link above it gives you the spec of the TV, and go to the about section and it lists all the stores.
I said I was going to recommend to friends as it was the best price I had found (looking on this site now I think Makro are cheaper but thought there was a thing where not everyone can shop at Makro, and also guess they don't give a 5 year warranty...), so I asked what sort of stock they had and they said they had a few left in store and some in a central warehouse but stock was going quick.
Anyway guys, hope you get yourself the bargain!! If you have any questions about the TV etc. then post below, I will try to reply with anything I know- getting it out of the box tonight so if the questions are about ease of use and stuff I should be able to answer them after my play with it this evening!
P.S They daid there sale end date is the 17th Jan, so put that as end date, but not sure if it might extend.