In November 2025 Radiohead broke whose attendance record at London's O2?

Metallica's: 22,211, set in 2017. Radiohead beat it on each of four nights, every crowd bigger than the last, and the final night, 25 November, drew 22,355. Playing in the round added a standing floor of about 6,000. Each ticket carried £1 for the LIVE Trust, which funds grassroots venues.