Freeman says fans often break into applause while they are shooting and it is not easy for actors.
"When we're (filming at) our stand-in for Baker Street, it is hard to do your job. And I don't love it. It's like trying to act at a premiere... I wasn't in The Beatles. But I've never seen anything like it. There's such a heightened sense of excitement...," he told the Independent.
This year there would be only one episode of the show that will come as a Christmas special.
"By American standards it's nothing! Even by Downton (Abbey) standards it's pretty short! It's not eight months of our year, and it's not every year. It's so intermittent. That's what for me makes it do-able," Freeman said.
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"I don't know about Ben but certainly for me it would soon lose a lot of its appeal if we were schlepping that around for eight months of the year, every year. A bit of the sheen would have gone off it."
"That's the question I was asked 40 times a day: 'Do you miss Bilbo?' 'No, I don't, because I'm not mentally ill.' Well, I am, in many ways! But I'm not deluded - I don't think he's real, and I don't think I am him.