Brian Cox

Santa (voice)

Fiona Shaw

Ms. Trapper (voice)

Jodie Whittaker

Mrs. Williams (voice)

Bill Nighy

Lighthouse Bill (voice)

Lolly Adefope

Mrs. McNutt (voice)

Katherine Parkinson

Mrs. Forrest (voice)

Sindhu Vee

Mrs. Mulji (voice)

India Brown

Bernadette McNutt (voice)

Sienna Sayer

Charlie Beccles (voice)

Rosie Cavaliero

Mrs. Beccles (voice)

Paul Kaye

Yirrell (voice)

Guz Khan

Dasher (voice)

Andy Nyman

Mr. Beccles (voice)

Freddie Spry

Teddy Forrest (voice)

Rhys Darby

Mr. McNutt (voice)

Deborah Findlay

Mrs. Horton (voice)

Simon Otto

Additional Voices (voice)

Jordan North

Additional Voices (voice)

Dermot O'Leary

Additional Voices (voice)