Can you help City of London Police to identify a man who leapt 40 feet off London Bridge into the Thames on 22 September?
The man, who identified himself to British Transport Police officers at the scene as Robert Briggs, 23, of North London, had been stopped by police after an altercation with a group of students at a bus stop on the south side of the bridge.
After jumping into the river just before 2.30am the man refused all attempts by police officers to assist him and swam towards the Cannon Street railway bridge where he was lost from sight.
It is not known why he jumped into the river, and the situation was calm and quiet immediately before he did so.
City of London Police officers are anxious to identify the man; anyone with information is asked to call 020 7601 2222.