Brockwell Park has been shut after thousands of sun worshippers breached Government lockdown rules.
Brockwell Park saw more than 3,000 visitors over the course of Saturday, "many of them sunbathing or in large groups," Lambeth council said.
The council announced the news on Twitter, describing the revellers' behaviour as "unacceptable."
It tweeted: “Despite clear advice, over 3000 people spent today in Brockwell Park, many of them sunbathing or in large groups.
"This is unacceptable. Unfortunately, the actions of a minority now means that, following police advice, Brockwell Park will be closed tomorrow. #StayHome."
The council added: “We are sorry we’ve had to take this decision. This wouldn’t need to happen if people followed the clear instructions from the Govt.
"We are doing this for the wider safety of the public. A minority of people have not followed the guidance – regrettably we have to act.”
As temperatures soared over the course of the day, Twitter users shared their concern at the state of the park.
One user wrote: "Really think @lambeth_council need to close #BrockwellPark - I’ve been going there for my daily walk & every single time some idiot jogger has come within 1-2 feet of me and there are groups everywhere.
"Close it this weekend- people clearly care more about good weather than heath."
Under current social distancing measures, Brits can only leave the house if they are key workers travelling to their jobs, shopping or health essentials, or for exercise once a day.
Please stay at home and stay safe. Only go out to exercise and shop for essentials. If people continue to flout the rules then more of our parks will be closed which is a real shame for people using the park to exercise within the government's guidelines and practicing social distancing. Don't be selfish - living in the city and with many not having a garden, the parks provide welcome relief for exercising or taking a walk in nature.