The actor, who was promoting Spider-Man: Far From Home, was discussing the film’s plot when he gave away the detail about a huge death in Avengers: Endgame.
Tom Holland has angered viewers of The Graham Norton Show after letting slip a massive Marvel spoiler.
Spider-Man: Far From Home, which also stars Jake Gyllenhaal and Zendaya, is out in UK cinemas on 2 July.
Also, the Russo brothers – who directed Endgame – lifted the film’s spoiler ban last month. This didn’t stop people from complaining on Twitter.