Kieton trained at the Young Actors Theatre on their Foundation Course in Acting.
His theatre credits include The Unreturning with Frantic Assembly on their UK tour (Including Theatre Royal Plymouth and Theatre Royal Stratford East), Give Me Your Skin at the Battersea Arts Centre, and Hidden Figures: WWII at Colab Factory.
Kieton leading performance in the gritty gangland drama Yes Man was received with acclaim. He has also appeared in the feature film, Bruno (British Council Film) and short films Pulling (Kaiser Siren Films) and The Backseat (Hidden Art Films).
Kieton is currently in his final year at LAMDA.