Radiohead are at a loose end. They are without a record label after their contract with EMI expired. Thom Yorke, their singer, is releasing a solo album in July, though he adamantly denies it implies any rifts in the band: there will be a new Radiohead album too, probably next year, seven of whose tracks were debuted at this show. After 17 years together, they seem determined to present themselves as a work in progress.

This spirit of self-invention, allied with technically excellent, imaginative musicianship, is what marks them out from both their old Britpop contemporaries and the legion of bands they have inspired. Their setlist at the Apollo touched on all aspects of their career, from Nirvana-influenced early material such as “Iron Lung” to the alt-prog rock of “Karma Police” and the warped ambient electronica of their Kid A-era music.

Their new songs revert to rock’s guitars-drums format, yet bear the imprint of their electronica experiments. “15 Step” combined a quasi-hip-hop drumbeat, which sent Yorke into a wild, flailing dance, with meandering, almost jazzy guitars. “Arpeggi” featured skittering percussion and melancholy harmonies. The best of them, “Bangers and Mash”, worked up an irresistible momentum with repetitive beats and clanging, twisty riffs played brilliantly in tandem by the guitarists Jonny Greenwood and Ed O’Brien.