Renée Zellweger
as Beatrix Potter

Ewan McGregor
as Norman Warne

Emily Watson
as Millie Warne

Barbara Flynn
as Helen Potter

Bill Paterson
as Rupert Potter

Matyelok Gibbs
as Miss Wiggin

Lloyd Owen
as William Heelis

Anton Lesser
as Harold Warne

David Bamber
as Fruing Warne

Phyllida Law
as Mrs. Warne

Patricia Kerrigan
as Fiona

Lucy Boynton
as Young Beatrix

Oliver Jenkins
as Young Bertram

Justin McDonald
as Young Heelis

Judith Barker
as Hilda

Jennifer Castle
as Jane

Christopher Middleton
as Saunders

Lynn Farleigh
as Lady Sybil

John Woodvine
as Sir Nigel

Jane How
as Lady Armitage

Geoffrey Beevers
as Mr. Copperthwaite

Bridget McConnell
as Lady Stokely

Joseph Grieves
as Lionel Stokely

Clare Clifford
as Mrs. Haddon-Bell

Andy McSorley
as Harry Haddon-Bell

Sarah Crowden
as Lady Clifford

Richard Mulholland
as Ashton Clifford

Marc Finn
as Mr. Cannon

Nicholas Hutchison
as Meeting Chairman

Mike Burnside
as Man at Meeting

Dominic Kemp
as Auctioneer

Barry McCormick
as Bidder

Neil Burgess
as Station Staff (uncredited)

Avril Clark
as Woman in Bookshop (uncredited)

David Malcolm
as Platform Passenger (uncredited)

Pam Rose
as Lady (uncredited)

Andrew Sloey
as Young Farmer (uncredited)