alt-J are set to return to London’s iconic The O2 on Wednesday 14 July 2027 as the latest major act joining the venue’s milestone 20th birthday celebrations.
Bringing their THEN AGAIN TOUR 2027 to the Greenwich arena, the Mercury Prize-winning British band will mark exactly a decade since their unforgettable first headline performance at The O2 back in 2017. Widely celebrated as one of the most distinctive and successful British groups of the millennium, alt-J have sold more than two million albums and amassed over two billion streams worldwide.
Audiences can expect an extraordinary evening spanning their acclaimed catalogue, from their 2012 Mercury Prize and Ivor Novello Award-winning debut An Awesome Wave and UK number one, GRAMMY-nominated follow-up This Is All Yours to their top-ten, Mercury-nominated third album, 2017’s RELAXER. Their summer date adds to a massive 20th birthday line-up at The O2, joining previously confirmed performances from Jorja Smith, Maisie Peters, Shreya Ghoshal, SOMBR, David Guetta, Kings of Leon, Jack Johnson, Jamiroquai, Don Omar, Santana, Brad Paisley, and Pet Shop Boys.
Commenting on the milestone booking, Emma Bownes, Senior Vice President of Venue Programming at AEG International, described alt-J as one of the most distinctive and successful British bands of their generation, adding that it feels particularly fitting to welcome them back ten years after their first headline show at the arena. She noted that The O2’s 20th birthday celebrates the artists who have defined its story over two decades, with further announcements still on the way.
Since opening in 2007, The O2 has welcomed more than 100 million visitors, sold over 30 million arena tickets, and hosted upwards of 6,800 events, recently extending its landmark naming rights partnership until 2038. For next summer’s concert, O2 and Virgin Media broadband customers will receive exclusive Priority Tickets presale access via the Priority app from 10am on Wednesday 18 November 2026, ahead of general on-sale at 10am on Friday 20 November 2026 via The O2 website.
