Mark shot to fame as Luke Skywalker in the original 1977 Star Wars blockbuster and he went on to appear in two sequels, but he has previously been unenthusiastic about reprising his breakout role for more movies.

However, Mark admits he felt unable to turn down an offer to appear in the latest installment, Star Wars: Episode VII - The Force Awakens, amid fears fans of the franchise would have turned on him.

"It wasn't like I had a choice," the sci-fi icon tells Britain's Daily Mirror newspaper. "Can you imagine all those fans forming a mob around my house protesting that I had turned down the chance to do another Star Wars? I didn't want to go from beloved icon to the most hated man in fandom."

Last year (14), Mark revealed he was unsure about starring in the new film, but was keen to reunite with his original co-stars Harrison Ford and Carrie Fisher.

"I said to (Star Wars creator) George (Lucas), 'Have you really thought this through? Because maybe it's not such a great idea,'" he told Yahoo! Movies.

"But I had a feeling, I said, 'You know what - if there's a weak link, if Carrie (Fisher) or Harrison (Ford) decides they don't want to do it, there's an out. Because it's all or nothing. It should be all of us or none of us.' So I was ready to go either way. And now that we're all in, we'll see what happens."

Star Wars: Episode VII - The Force Awakens is due for release in cinemas in the U.K. on 17 December (15) and in the U.S. a day later (18Dec15).