The double gold medal winning Olympic rower, James Cracknell tells Stephen Sackur how an accident which left him with a brain injury has changed his life and put his family relationships under strain.

In July 2010, Mr Cracknell was hit from behind by a petrol tanker whilst cycling during an attempt to cycle, row, run and swim from Los Angeles to New York within 16 days.

He told the BBC's Hardtalk programme about how his injury has affected his relationship with his son and his wife.

If you have had a similar experience with Traumatic Brain Injury (TBI) a research team for a BBC documentary currently in development would be interested in hearing from you. Please email: kathleen.mullin@bbc.co.uk

You can watch the full interview on BBC World News on Thursday 15 November at 04:30, 09:30, 15:30 and 21:30 GMT and the BBC News Channel at 0030 and 0430 GMT on Friday 16 November 2012 and 0030 on Saturday 17 November 2012

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