Bethan trained at the Bristol Old Vic Theatre School.

Her previous theatre credits include: Lady Chatterley's Lover (National Tour for Tiltedwig Productions); Maid Marian in Robert Earl of Huntington Part 1 & 2 (Shakespeare's Globe 'Red not Dead Series' ); Kay Strange in Towards Zero directed by Brian Blessed, Emma in Emma (National Tour for The Production Exchange); Eliza Doolittle in My Fair Lady and Tracy Lord in High Society (The Mill at Sonning); Polstead (Eastern Angles); Juliet in Romeo and Juliet (New Mutiny Theatre Co. The Egg, Bath Theatre Royal); Susan Walker in Swallows and Amazons (Bristol Old Vic Theatre).

Television/Film: A Noble Truth (BFI Network), Stories of the Subconscious Mind (Amazon Prime UK & USA), Casualty (BBC), London Road Film (Rufus Norris and National Theatre/BBC film), Crash Cam and Mediterranean Sea (both directed by Tia Salisbury).