Detectives investigating a serious assault on a police officer in south London have released an image of a man they would like to trace.
Police in Lambeth were called to a bar in Clapham Road, SW9 at 00:48hrs on Sunday, 7 January following reports of an altercation between security door staff and a group of young men.
Officers attended and an 18-year-old man [A] was arrested on suspicion of violent disorder.
A uniformed officer remained at the scene and was taking a statement when some members of the group involved in the initial altercation with door staff returned.
The officer intervened and attempted to detain one of them. At this point he had a bottle thrown at his head.
The male officer, aged in his 30s, was taken to a south London hospital for treatment of a head injury. He has since been discharged.
Officers attended following the attack on the officer, and four males - [B] aged 18, [C] aged 17, [D] aged 17 and [E] aged 18 - were arrested on suspicion of public order offences.
[C] was referred to his local Youth Offending Team. The remaining three ([B], [D] and [E]) have been released with no further action to be taken.
Officers are now releasing an image of a man they want to speak to in connection with the assault on the officer.
DC Rich Mosford, of Lambeth CID, said: "This was a serious assault on a police officer who suffered a head injury and was left bloodied by a glass bottle deliberately thrown at him as he tried to bring some order to the situation.
"The consequences could have been far worse. Attacks on officers of this nature and severity are thankfully rare and they will not be tolerated.
"As part of our ongoing investigation, we would like to speak to the man in the picture. Do you recognise him? If so, get in touch right away.
"I would like to praise the officer involved who, after sustaining his injury, still managed to keep hold of and detain a potential suspect amidst the disorder."
Anyone who witnesses or has information about this attack is asked to call 0208 649 2134 or 101 quoting CAD 291/7Jan, or Crimestoppers anonymously on 0800 555 111.