AEW held its first-ever seven-team World Trios Championship match at the start of All In in London, with the title changing hands and two major free-agent signings unveiled in the process. Kofi (formerly WWE's Kofi Kingston) and Austin Creed (formerly Xavier Woods), now branded as The New Level, made their AEW debuts as wildcard entrants alongside Swerve Strickland, and the trio went on to win the championship, strengthening AEW's tag team roster with a high-profile addition.

The chaotic multi-team bout, which began during the pre-show Buy In and ran into the main card at Wembley Stadium, saw defending champions Adam Page, Bandido and Brody King eliminated early, followed by the teams of Kyle O'Reilly, Orange Cassidy and Roderick Strong; Gabe Kidd, Clark Connors and David Finlay; Colten and Austin Gunn and Jay White. It came down to Strickland, Kofi and Creed against Claudio Castagnoli, Pac and Kidd, with interference from Prince Nana helping keep Kofi in the match before his team sealed the win. AEW owner Tony Khan subsequently confirmed Kofi and Creed had officially signed with the promotion, marking the show's second title change inside its first two hours after Persephone had earlier beaten Maya World for the TBS Championship.