A tube passenger caught up in the chaos following the King's Cross bomb filmed the underground evacuation on his mobile.

David Couzens was on a train behind the one hit by the blast, which killed 21 people.

London emergency hotline number: 0870 1566344

If you have video from the scene of the blasts in London you can submit it to the BBC by emailing yourpics@bbc.co.uk or by text to +44 (0) 7921 648159