Mercury Prize-winning British trio alt-J have been announced as the latest headliners for The O2’s 20th birthday celebrations, taking place throughout summer 2027. The band will bring their THEN AGAIN TOUR 2027 to the iconic London arena on Wednesday, 14th July 2027, marking exactly a decade since their landmark 2017 headline performance at the venue.
With over two million albums sold and two billion streams worldwide, alt-J have cemented their status as one of the UK’s defining modern bands across acclaimed releases including their Mercury Prize and Ivor Novello-winning debut An Awesome Wave, UK Number 1 album This Is All Yours, and RELAXER.
They join an extensive slate of international performers celebrating two decades of live entertainment at The O2, alongside previously announced shows from Kings of Leon, Pet Shop Boys, Jamiroquai, Jorja Smith, David Guetta, Maisie Peters, Santana, and SOMBR.
Commenting on the band’s return to the arena, Emma Bownes, Senior Vice President of Venue Programming at AEG International, said:
“alt-J are one of the most distinctive and successful British bands of their generation, so it feels particularly fitting to welcome them back to The O2 exactly ten years after their first headline show here. Our 20th birthday is about celebrating the artists and performances that have been part of The O2’s story over the past two decades, and we’re delighted to have alt-J joining what is already an incredible summer of live music.
