I can recommend www.letsgodigital.co.uk - £549!
I bought my own cam from them & was very impressed with their service. It's had to go back to Panasonic for a software update recently, again LGD were very helpful. Even offering to exchange for a new model, as Panasonic weren't (originally) acknowledging the problem.
The model of my cam is MX300B. The problem was a 'glitch' in the video/sound when capturing to my computer. The fix is a simple update of the camera software. Lets Go Digital were brilliant throughout. Which is why I recommend them!
I have recently purchased the Canon 550i from Lets GO Digital, and as mentioned previously by Arthur in this thread, their service is excellent... they even offer a 30 day money back guarentee... if you are not happy with the Cam, send it back and get a refund!
I know some high street companies will offer a price match, but I would prefer to give my business to the guys that offer the low prices UP FRONT, rather than accepting a reduced margin begrudgingly!
The cam arrived on the day they said, its a UK model (not a grey import) and it had everything in the box that should be there... it even comes with some DV editing software, and a Firewire card!
Can recommend LGD enough! (and NO I have no links to 'em whatsoever... I just buy kit from 'em)
I bought the new Canon MV5iMC from Pixmania.co.uk. Although I think the parent company is French - and I was billed in Euros - I ordered Monday at 11 am and recieved the camcorder on Tuesday at 11.34 am. Cost £720. Inc postage - Currently in Dixons for £1050.0 RIP OFF