Police are appealing for witnesses after a man in his 30s was raped in a wooded area of Clapham Common.
It is believed that two men were present at the time of the attack at midnight on June 30 on the western edge of the Common.
No additional details relating to the two men are currently available, but the Metropolitan Police are appealing for anybody with information to come forward.
Police are appealing for witnesses after a man in his 30s was raped in a wooded area of Clapham Common
Officers are currently treating the attack as an isolated incident but remain open-minded as the investigation continues.
Detective Sergeant Ross Burrell, investigating, said: 'We are determined to identify the person or persons responsible for this horrific crime and seek justice for the victim.
'A significant period of time has passed since the attack occurred but we still think there will be people out there with information that could help.
'We want to hear from anyone who was out on the Common that night and saw or heard anything suspicious.
No additional details relating to the two men are currently available, but the Metropolitan Police are appealing for anybody with information to come forward (stock image)
'We want to hear from anyone who has seen two men in the area, either before or after this incident, acting suspiciously or doing anything which has raised concerns.'
Sergeant Burrell added that officers will treat any information provided sensitively and will pass no judgement on reasons for being in the area at the time of the attack.
Anyone with information should call 101, providing the crime reference Cad 7542/17Aug.
Information can also be provided to the independent charity Crimestoppers, anonymously, by calling 0800 555 111.