David Mitchell
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David Mitchell on love and bad backs

29 October 2012 Last updated at 11:14 GMT

Comedian and actor David Mitchell has explained how a remedy for his bad back helped structure his new book.

He described Back Story: A Memoir as a "walk around where [he] lives in London, reminiscing about life and getting annoyed."

Mitchell also spoke to BBC Breakfast about his happiness at getting engaged and about being confused for the Cloud Atlas author, David Mitchell, by the MP David Miliband.