Ruth Syratt as Ruth

Megan Stevenson as Megan

Stephen Fry as Narrator (voice)

Johnny Vegas as Robert / Botty

Brian Bovell as Ralph Sheldrake

Sophie Thompson as Valerie

Guy Henry as Martin

Tony Way as Peter

Tom Lenk as Alex

Laura Aikman as Young Valerie

Kiell Smith-Bynoe as Young Ralph

Jane Horrocks as The Aviator

Mark Heap as The Regency Dandy

Anya Rivers as Tracey

Brian Blessed as Gavin the Octopus (voice)

Simon Killick as Rick

Rosa Gee as Young Ruth

Matthew Michaelson as Builder Dave

Ed Francis as Guy in Band

Pat O'Connor as Brenda

James McClelland as Toilet Man

Alex Horne as The Unreason Band (as the Horne Section)