Have used the code XX214 for 20% off. The xbox 360 Arcade is being sold by Marshall Ward (and Littlewoods Direct) for £159 which is an okay price for a catalogue web site (Littlewoods, Choice, Great Universal all overpriced at £199) add in the 20% discount and this = £31.80 off + £3.50 postage = £130.70 delivered. I have tried the code on Littlwoods Direct also and it appears to be working no problem.
I know there has always been some question about these codes being honoured by the retailer. All I can say is that I have used them off and on for some time now and never had one rejected yet. Oh and I know you can add codes for free delivery but technically you are only supposed to use one with any given order and I dont want to push my luck for the sake of £3.50 !
I might add also, I am led to understand that all consoles now sold come with a three year warranty as standard.