Harry Potter star Matthew Lewis has opened up about fears he had after the movie series concluded, admitting he worried he couldn’t “hack it” as an actor.

The star played Neville Longbottom across the franchise’s eight films, and admitted that the series’ child stars found it “tricky” to transition to adults in the industry after the final movie in 2011.

Speaking at the Rhode Island Comic Con (via People), Lewis explained that there “was absolutely a lot of trepidation” on whether he “was going to be able to hack it in that larger pool”.

“Although, that said, I was very excited about the prospect,” he added. “I have quite a short attention span, so that’s probably why I’ve never chosen a real career. [After] 10 years in Harry Potter, I was ready to do something else and also was not keen to do anything that was going to lead to multiple series.”

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Lewis added that he “had no idea what was next” and “wasn’t prepared at all”, though revealed that the friendships formed in the Harry Potter cast helped.

“One of the questions that was asked earlier about the pitfalls of being a child actor that we seem to have avoided, I would posit that a large degree of that was because we were all there together,” he said.

“Frequently, you hear many stories of how they were the sole actor in that movie and having to carry that movie on their own and all of the pressures and anxieties that come with that. Whereas, we were all kind together.”

Harry Potter is set to be rebooted in an HBO series, with studio boss Channing Dungey recently confirming that the show will be “more in-depth” than the movies.

“It’s an unbelievable dream, honestly, and as somebody who is a huge fan of books, the opportunity to get to explore them in maybe a little bit more in-depth than you can in just a two-hour film, that’s the whole reason we’re on this journey,” she said.