Bertie trained at Bath Spa University (BA Acting).

Theatre credits include: Spitting Image the Musical (Phoenix Theatre, West End); Idiots Assemble (Birmingham Rep); Dinosaur World Live (UK Tour); The Hatchling (Plymouth, Wakefield and Queen's Platinum Jubilee); The Lips (UK Tour); Gnomus (Kew Botanic Gardens); Rocket Launch(Blaenavon Iron Works); Moby Dick (Newport Transporter Bridge)

TV credits include: Dreamers - Meet Grumby (Adult Swim Smalls)