(probably) long shot - ticket exchange for the Roundhouse shows in October?
 

I've got two tickets for the show on Wednesday the 17th but it would be a lot more convenient for me to go to the most recently announced show on the 19th. I don't suppose there is anyone who has tickets for the Friday show but would prefer to go to the first of the London shows on Wednesday night, is there?

You can PM me if so. I have a decent amount of positive feedback on eBay so I am a fairly reliable guy :)