Griff joined the band mid-set for an impromptu jam at their sold out show.
An eyewitness told NME.COM: “Griff came on half way through the band’s set and started orchestrating the live band. They started a funky instrumental jam, and then Griff and the other members of Spooks freestyled for about five minutes.”
Other stars at the show included Morcheeba and Crispian Mills.
Spooks continue their UK tour with a show in Manchester this evening (May 3).