I think it will be much less complicated to spend a little more and buy your iPad in the U.K. The hassle isn't worth it IMO.
That being said, I wish there was a reverse service for those in the U.S. who want to get items only sold in other countries--like the factory unlocked Canadian iPhone. . .
Got to agree, it just generally isn't worth the. Most people who used Bundlebox just couldn't wait for it as it wasn't available. It is now so in fact you could probably have one in your hands by the end of the day! Go, quick!