Lol....UK pricing for the 16-35 f4 LIS seems to be nearly as expensive as the f2.8 version! It's a tax for the impatient.
While I'm sure the UK price will fall dramatically once the product is on the shelves, i really thing that canon urgently needs to refresh it's UK RRP policy.
I've been an early adopter in video game systems and that's about it. I've been able to not go nuts and buy camera gear at launch.... which I believe shows great moral character... though I'm the only one that would believe that.