Tom Holland has angered Marvel fans after letting slip a major spoiler from Avengers: Endgame during an appearance on The Graham Norton Show.

WARNING: Spoilers ahead.

The Spider-Man: Far From Home star was discussing the new movie when he revealed which leading character dies in Endgame.

"The film is a direct continuation of Avengers: Endgame so we deal with the ramifications of the blip, of the death of Tony Stark," Holland, 23, told the host.

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"Sorry if anyone hasn't seen the film! If you haven't, then you're living under a rock, to be honest."

New Trailer: Avengers: Endgame

The most recent Avengers movie's plot was a closely-guarded secret among fans in the weeks following its April release, although the directors lifted the "ban" on spoilers last month.

However, it seems there are still plenty of fans who haven't had a chance to see it yet.

It's not the first time Holland has dropped a Marvel spoiler β€” in fact, he's a repeat offender.

He previously shared the Spider-Man sequel's title on social media prior to an official announcement, revealed Marvel's plans to turn the first Spider-Man film into a trilogy, and even walked into an Avengers: Endgame movie screening and shouted "I'm alive!" before it had even been shown.

Spider-Man: Far From Home will be released in New Zealands on July 3.