Police are appealing for witnesses and information following a brutal unprovoked attack on a man that left him hospitalised and temporarily unable to speak.
The 52-year-old man, Colin Flett, was found unconscious in Skardu Road, Camden, by paramedics from London Ambulance Service at about 23:30hrs on Friday 7 July 2017.
The assault was not reported to police by his family until several days later - and Colin spent several weeks unable to speak to either his family or officers waiting to interview him.
His sister told officers that her brother had been drinking in a pub named the Beaten Docket in Cricklewood Broadway on the night in question.
While sitting outside the pub he bought a blue Reebok pedal cycle from man who he had not met before.
He left on the cycle, and turned into Skardu Road, where he remembers encountering three men who pushed him off the bike. He was unable to recall any more details.
As a result, Colin sustained a spinal injury and medical staff assessed him as needing a long period of recovery in hospital.
Detective Sergeant Richard Greenwood from the Central North Area Command Unitfs CID, said: "This was a vicious attack that has left Colin with life-changing injuries, in a very vulnerable state, and has had a devastating effect on his family.
"We would urgently ask any person with information, however inconsequential they may think it is, to come forward and pass this to us directly or via a third party. They will be treated in complete confidence."
The men who attacked Colin are all described as being white and aged between 20 to 30.
Anyone with information can call the unit's CID number on 0766 781 861 on or 101 or Tweet @MetCC.
Information can also be reported anonymously to Crimestoppers on 0800 555 111 or online at crimestoppers-uk.org.