Costco has a Panasonic 32" LCD TV Model No: TX-32LMD70 for £399.98. You need to have the Costco Passport voucher to buy this. If you are a member and do not have a Passport voucher, you could try asking at the member's desk if they have a spare Passport book that you can have. I went in to the store on Monday and they were all gone by the morning.
This is offer is valid for 5 days but I was told that if they don't have enough LCD to go round, then what they do is to sign the voucher for you and you still get it for that price when they have more stocks in.
Hope this helps.
By the way it is best to ring the store before to see if they have them is stock. If there are none left they have a waiting list and they will then ring you back once they have one for you.