should come to a university ( i.e. UWE) as they could give a couple of lectures to relevent subjecs ie movie studies and games dev with monty and th uni would allow them to use the HP building (mini covention center) that they could hold a fan event in at a reduced rate and could get uk fans and students to help out as crowed controll.
Do they tend to hit up the cons in the UK? There's a convention happening in Manchester in July they could hit up if that's the case. I'm sure us up north would love to see them too, not just let you Londoners have the privilege. XD And I wouldn't mind being their tour guide through Manchester. :P