Looking at tours / one of gigs etc around London mid May any of the following could quite easilly play EITS ATP:

Mogwai - Playing London Monday before ATP

Bill Callahan/ Smog - Playing London Wednesday Before ATP

Xiu Xiu - Playing London Monday After ATP

Spiritualized - Playing London Tuesday after ATP

and of cause there is all the BSS spin off's / Side projects inc. Fiest.

Anyone think of any others?