Two men, aged in their 20s and 30s, were standing outside the Two Brewers when a man approached them and attacked them with a knife before running away on the evening of 13 August.
They were both taken to hospital for treatment and have since been discharged.
The incident is being treated as a homophobic attack by the Met and no one has been arrested yet.
Investigators said the image released was “taken from outside the venue at the time of the attack”.
“I am asking the public to look at this image and see if they recognise this individual – it is vital that we identify and locate him as soon as possible,” Detective Chief Inspector Jivan Saib, from the Met Police’s Central South Command Unit, said.
#APPEAL | Do you recognise this man?
The image was taken from outside the Two Brewers venue at the time of the homophobic attack in Clapham.
Anyone with any information 📞 police on 101 quote CAD 7198/13Aug.https://t.co/n3PofRvOQa
— Lambeth Police | Central South BCU (@LambethMPS) August 15, 2023
He confirmed that officers have “collated witness accounts and scoured CCTV for evidence”.
“I appreciate those who have come forward and spoken to police but would ask that if you were in the area and saw these events unfold, but have yet to contact us, then please do so,” Saib continued.
“There is no place for hate in London”
Sadiq Khan, the Mayor of London, condemned the “abhorrent” attack.
“The incident in Clapham High Street on Sunday night was abhorrent. It’s a huge relief the victims of this appalling attack are out of hospital, and my thoughts remain with them and their loved ones,” he said in a statement.
“I have always been clear that there is no place for hate in London. I stand with LGBTQI+ Londoners and will do all I can to end hate crime in the capital. My team, along with the Met Police, are supporting and working closely with the LGBTQ+ Venues Forum and its members who will be invited to attend an urgent meeting later this week.”
Anyone with information is asked to contact police on 101 or tweet @MetCC and quote CAD 7198/13Aug.
You can also provide information anonymously to the independent charity Crimestoppers on 0800 555 111.