Olivia Colman

Ivy Rose

Benedict Cumberbatch

Theo Rose

Andy Samberg

Barry

Kate McKinnon

Amy

Belinda Bromilow

Janice

Ncuti Gatwa

Jeffrey

Sunita Mani

Jane

Zoë Chao

Sally

Jamie Demetriou

Rory

Allison Janney

Eleanor

Delaney Quinn

Hattie Rose (Younger)

Ollie Robinson

Roy Rose (Younger)

Hala Finley

Hattie Rose (Older)

Wells Rappaport

Roy Rose (Older)

Will Smith

Derek

Caroline Partridge

Sylvia (Food Critic)

Margaret Clunie

Sophy

Ollie Dabbous

Himself

Jude Coward Nicoll

Teenager on Airplane

Akie Kotabe

Alan

Emily Piggford

Lily

Paul Pape

Commercial Announcer

Ranjani Brow

News Anchor

Robin Atkin Downes

Boss

Matt Corboy

HAL (voice)