Ossian Perret as Young Arthur, Patricia Hodge as Joan, David Bromley as Vicar, Nigel Pegram as Derek, Joanna David as Rachel, Diane Keaton as Linda, Lulu as Susan, Tom Stourton as Robert, Marcus Fraser as Nathan, Hannah Howland as Young Susan, Esme Lonsdale as Young Joan, Genevieve Gaunt as Young Linda, Talitha Wing as Shyla, Jacqueline Clarke as Doris, Alex Guersman as Hugo, Rae Lim as Kim Waxologist, Ross Tomlinson as Raymondo, Monika Choan as Threader, Kingsley Amadi as Busy Bee, Eva Scott as Mia, Anthony Burgess as DJ, Adil Ray as James, Maryanne Eve as Young Karen, Paul Antony-Barber as Karl, Jaime Winstone as Sharon, Mel Harris as Dr. Deborah Wingard, David Harewood as Hal, Mark Brailsford as Chuck, Lawrence Chaney as Lucy Rulez, Faizal Abdullah as Johnny the Bellhop, Boy George as Himself, Bill Paterson as Henry, Hayley Mills as Karen