Oliver Dearlove
Oliver Dearlove was assaulted by a taxi rank in Blackheath, south east London Met Police

A man has been arrested on suspicion of throwing the fatal punch that killed London banker Oliver Dearlove. The 31-year-old was assaulted waiting for a taxi in Blackheath, south-east London, on Sunday (28 August) after the group of friends he was with struck up a conversation with a group of girls.

Witnesses have told police Dearlove, who worked as a relationship manager for Duncan Lawrie Private Bank after spells at Coutts and Barclays, was struck by a man who had also hit one of his friends, before falling to the ground. A post-mortem examination has provisionally given Dearlove's cause of death as a brain haemorrhage.

A 31-year-old man was arrested on Thursday morning (1 September) on suspicion of murder and on suspicion of ABH after he attended a south London police station by appointment. He remains in police custody at that police station.

"Our investigating is continuing and we've made huge progress in identifying key witnesses and recovering vital CCTV," said detective chief inspector Lee Watling, who is leading the investigation. "However, if you were in the area that night and saw something that may help our investigation but haven't yet spoken to us then please call the Incident Room." The Incident Room can be reached on 020 8721 4205, although those who wish to remain anonymous can call Crimestoppers on 0800 555 111.