The band will play a crowdfunded concert in the city tonight
The band previewed the 'Sonic Highways' track at London's Islington Assembly Hall
London Mayor Boris Johnson also attends show at the city's Olympic Park
US band play second of three tiny shows in the run up to their show at London's Queen Elisabeth Park
Band to perform at Islington Assembly Hall on Friday night (September 12)
Bassist Nate Mendel says band have 'unique' plans for next year
Dave Grohl hinted that the band could play a week of shows at Wembley Stadium
Tickets for tomorrow's House Of Vans show are on sale now
Joe Walsh, Ben Gibbard and Rick Nielsen confirmed to appear on 'Sonic Highways'
Reports suggest that group will play London's House Of Vans venue