The Celebrity Circle for Stand Up to Cancer, a spin-off of The Circle, began on 9 March 2021 on Channel 4, and concluded following six episodes on 15 March. The series was confirmed in June 2020, and was filmed during Autumn 2020 in its usual location in Salford, England. Unlike the regular series, the celebrity players, if they decided to play as a catfish, were limited to playing as other celebrities. On 15 March 2021, the series was won by Lady Leshurr, who had played the game catfishing as Big Narstie. She beat Saffron Barker in the final ratings, who finished as runner-up.