TV
Rex Features
The actor, who played Tim Canterbury in the sitcom, said viewers struggle to accept him in any other role.
He has starred in movies including Love, Actually and The Hitchhiker's Guide to the Galaxy since rising to fame on the BBC show.
He told the Mail on Sunday: "A lot of people love The Office, and I am genuinely pleased they like it. I loved playing Tim, but I try not to get too carried away by it - and the blessing of The Office was also a curse.
"The blessing was that it really helped me; the curse is I'm expected to not do anything else."
Freeman said he was disappointed by the response to his turn as Lord Shaftesbury in 2003 BBC series Charles II: The Power And The Passion, commenting: "The day after there was a picture of me in a newspaper with the headline, 'Tim in a wig!' And that really got me down.
"I thought, 'Will I always be Tim in a wig or Tim in a concentration camp or Tim on a horse?' So I had to broaden my horizons."
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