Main •
Gabrielle Creevy as Bethan, a 16-year-old school student who is hiding her troubled home life from people at school and also deals with embracing her lesbianism • James Wilbraham as Travis, a gay school student who is best friends with Bethan and Lydia •
Poppy Lee Friar as Lydia, a rule breaking school student who is best friends with Bethan and Travis •
Jo Hartley as Katrina, Bethan's mother who has bipolar disorder • Aled ap Steffan as Stan Priest, a school student who bullies Bethan •
Di Botcher as Nana Margie, Bethan's grandmother •
Rhodri Meilir as Dilwyn, Bethan's alcoholic father
Recurring • Zadeiah Campbell-Davies as Poppy, a popular girl who encourages Bethan to kiss her - then drops her. •
Alexandria Riley as Miss Morgan, a sarcastic English teacher who supports Bethan's creativity •
Suzanne Packer as Nurse Digby, a nurse at the psychiatric hospital •
Laura Checkley as Ms Blocker, a tough lesbian PE teacher who originally dislikes Bethan but later softens to her •
Richard Corgan as Tony Chipper, an employee at the chip shop who takes advantage of Lydia (series 1) • Georgia Furlong as Lorraine, an unpopular girl who desperately wants to be friends with Poppy • Jac Yarrow as Jamie, a student who helps Bethan with her campaign posters (series 1) • Dave Wong as Alfred, a mentally ill patient at the hospital (series 1) •
Lu Corfield as Head Teacher, the headteacher of the school • Ellen Robertson as Jodie, a nurse on the psychiatric ward (series 1) • Rebekah Murrell as Cam, a lesbian student who Bethan begins dating (series 2) •
Steffan Rhodri as Perry, a kind man Katrina forms a relationship with behind Dilwyn's back (series 2). • Olivia Southgate as Ffion, Perry's young daughter, a very sweet girl who has Down Syndrome (series 2). ==Production==