Video footage of a man with similar build to MI6 officer Gareth Williams trying to lock himself in a bag, has been played at his inquest.

The body of Mr Williams, 31, from Anglesey, was found in a holdall in the bath of his London flat in August 2010.

Tests were done to find out if it could have been locked from the inside. An expert said he and his assistant tried to do it 300 times without success.

The BBC's Daniel Boettcher reports.