Dave Grohl's new supergroup THEM CROOKED VULTURES made a surprise appearance in London on Wednesday night (26Aug09). The band, which also includes Led Zeppelin's JOHN PAUL JONES and Queens Of The Stone Age's Josh Homme, made their U.K. debut supporting the Arctic Monkeys at the O2 Brixton Academy. They are also rumoured to be making a surprise appearance at this weekend's (29-30Aug09) Reading and Leeds Festival in Britain.