A quick look on Apple's UK site reveals that "Wi-Fi models shipping in late March. 3G models shipping in April." That's despite what Steve Jobs said last week indicating that the 3G iPad wouldn't debut until June or July.

Also, some rumors of late have been flying about a potential heavily subsidized 3G version in the UK similar to how a lot of netbooks are sold, i.e. if you are willing to signup for a 24month data plan you get the device itself for 'free' or at a very low cost. I must admit that kind of offer would certainly appeal to some who can't afford to stump up the $499+ price tag.