Chris Noonan Director Renée Zellweger Beatrix Potter Actor, Executive Producer Ewan McGregor Norman Warne Actor Emily Watson Millie Warne Actor Barbara Flynn Helen Potter Actor Bill Paterson Rupert Potter Actor Matyelok Gibbs Miss Wiggin Actor Lloyd Owen William Heelis Actor Anton Lesser Harold Warne Actor David Bamber Fruing Warne Actor Phyllida Law Mrs. Warne Actor Richard Mulholland Ashton Clifford Actor Jane How Lady Armitage Actor Perdita Weeks Young Beatrix Actor Richard Maltby Jr. Writer David Kirschner Producer Mike Medavoy Producer Arnold Messer Producer Corey Sienega Producer David Thwaites Producer Steve Christian Executive Producer Louis Phillips Executive Producer Nigel Wooll Executive Producer Andrew Dunn Cinematographer Robin Sales Film Editing Martin Childs Production Design Tina Jones Set Decoration Grant Armstrong Art Director Mark Raggett Art Director Anthony Powell Costume Design Priscilla John Casting Nigel Westlake Original Music Rachel Portman Original Music