Henry Cavill. Picture: Reuters

'Mission: Impossible - Fallout' star Henry Cavill would have ditched the moustache he'd grown for the action movie if he'd known about the 'Justice League' re-shoots.

The 35-year-old star grew out his facial hair for his role of August Walker in the action blockbuster, but due to conflicting schedules it had to be edited out - at a huge cost - when he had to return for extra takes for the superhero movie.

Speaking to Square Mile, he revealed: "Had I known the 'Justice League' reshoots were coming I'd have probably made a different choice."

His obligation to keep the moustache cost Warner Bros. millions as it had to be digitally edited out of the scenes he re-filmed.

However, it did have one advantage for Henry as it gave him some anonymity by making him largely unrecognisable until he went back to the clean-shaven look.

Revealing what happened once he did shave it off, he added: "I was in America for, I think, three hours, and I had been asked for eight photographs. When I sat down in a restaurant I was like, 'wow, I forgot what it was like.' "

Henry has also opened up about co-star Tom Cruise's horrific injury while filming the latest instalment in the 'Mission: Impossible' franchise, which saw him break his ankle during a rooftop jump stunt.

Although he incredibly finished the take, production was halted for several weeks while he recovered but it gave his fellow actor a chance to work on his characterisation.

The 'Man of Steel' star joked: "I didn't break my ankle, so I got a holiday and my character got better! Wasn't even a cloud: just silver lining!"