Mosaku’s award comes nine years after she won the same category at the TV Baftas for her role in the BBC drama Damilola, Our Loved Boy – about the death of 10-year-old Damilola Taylor, which drew national attention when he was stabbed while walking home from a library in London.
When the programme aired in 2016, she said: “I grew up on an estate in Manchester and people I’ve known from school have died in gang trouble and I always thought, ‘If I’d been on a different estate at a different time, it could have been me’.”
Speaking about her victory on Sunday, Mosaku, who is pregnant, said: “I was like, ‘That can’t be right’. I was really shocked and I lost my breath and couldn’t quite believe it.”
The actress, who has also appeared in TV dramas Luther and Black Mirror as well as Marvel movies, also thanked her daughter, adding “you are my greatest teacher”.