Best London deals on Samsung LE40A656 & Sony KDL40W4000
Can't be bothered to wait for postage. Live in London. Might want to have a look at http://www.pricelesselectronics.co.uk They've got a store on 32 Buckingham Palace Road, 3 minute walk from Victoria Station.
I walked away with the Samsung today for £755, that's without the 5 year warranty. Alternatively you can walk away with the Sony for £827. Don't think you'll find a better deal in the high street in central London that doesn't involve waiting for postage.