Shirley is the youngest of eight children from a mixed race marriage. By the time she is a toddler the family have moved to the all white area of Splott and by the time she is 12 Shirley has discovered she has an extraordinary voice and can earn money singing in pubs around the docks after her father if jailed for sexual crimes. As a young teenager she begins singing and dancing in 'coloured review shows'. But it is a chance meeting with struggling agent Mike Sullivan that changes her life forever. He promises to make her a star, but has no idea of the personal sacrifice that will mean for the teenaged Shirley.
Ruth Negga
as Shirley Bassey
Amira Arish
as Shirley Bassey (Aged 9)
Lesley Sharp
as Eliza Bassey
Charlie Creed-Miles
as Mike Sullivan
Jeany Spark
as Juhni Sullivan
Henry Lloyd-Hughes
as Kenneth Hume
Danny Sapani
as Bobo
Babou Ceesay
as Henry Bassey
Isaiah Cai Forrest
as Henry Bassey Jr
Divine Faith Utonga
as Sharon Bassey
Larissa Wilson
as Iris Bassey
Matthew Marsh
as Jack Hylton
