Mimi Ndiweni (born August 31, 1991) is a British actress who portrays Nimi Chireen in the 2019 film (credited as "Resistance Officer"). She best known for playing the Nilfgaardian sorceress Fringilla Vigo in Netflix's The Witcher, Tilly Brockless in the television series Mr Selfridge and Ester/Jekasai in the stage production of The Convert at The Gate Theatre in London.