Time Travel Is Dangerous! (2025)

Ruth Syratt

Ruth

Megan Stevenson

Megan

Stephen Fry

Narrator (voice)

Johnny Vegas

Robert / Botty

Brian Bovell

Ralph Sheldrake

Sophie Thompson

Valerie

Guy Henry

Martin

Tony Way

Peter

Tom Lenk

Alex

Laura Aikman

Young Valerie

Kiell Smith-Bynoe

Young Ralph

Jane Horrocks

The Aviator

Mark Heap

The Regency Dandy

Anya Rivers

Tracey

Brian Blessed

Gavin the Octopus (voice)