Detectives continue to investigate a serious assault in December and have named the victim following his death. Officers are also releasing an image of a man they wish identify in connection with the investigation.

Shortly before 11:00hrs on 18 December, police were called to an address in District Road, Wembley. Petru-Sorin Doleanu, who was 41, had become unwell and his friends had called the London Ambulance Service. Having been told that he had been punched in the head during an altercation the previous day, paramedics alerted the police.

Petru-Sorin was taken to hospital where he was found to have a significant brain injury. He remained there until the evening of 29 March when he sadly died. His family is being supported by specialist officers.

A post-mortem examination on 6 April at Northwick Park Hospital Mortuary gave cause of death as (1a) bronchial pneumonia and (1b) head injury.

Detective Inspector Jack Stilwell of the Met’s North West CID who is leading the investigation, said: “The past few months have been extremely challenging for Petru-Sorin’s family and friends. While it has been clear for some time that his injuries were extensive, his death has understandably been very difficult for them to come to terms with.

“Our investigation has determined that on the night of 17 December, shortly before 21:00hrs, Petru-Sorin was with two friends near the Job Centre in St John’s Road, Wembley.

“They were approached by an unknown male. There was an altercation and Petru-Sorin was assaulted, sustaining the injuries that led to his hospitalisation the following day.

“We have carried out extensive enquiries and have obtained a CCTV image of a man we want to speak to about this incident. I would urge anyone who recognises him to come forward.”

Anyone who recognises the man in the image, or who has other information about the incident, should call police on 101, giving the reference 2254/18DEC.

Information can also be provided 100% anonymously to the independent charity Crimestoppers on 0800 555 111.