Maggie Smith:Miss Shepherd;Alex Jennings:Alan Bennett;Frances de la Tour:Ursula Vaughan Williams;Gwen Taylor:Mam;Dominic Cooper:Theatre Actor;James Corden:Street Trader;Roger Allam:Rufus;Samuel Anderson:Jehovah's Witness;Dermot Crowley:Priest;Jim Broadbent:Underwood;Stephen Campbell Moore:Doctor;Eleanor Matsuura:American Journalist;Sacha Dhawan:Doctor Malik;Samuel Barnett:Donald;Deborah Findlay:Pauline;David Calder:Mr. Fairchild;Elliot Levey:Theatre Director;Claire Foy:Lois, Social Worker;Pandora Colin:Mrs. Perry;Marion Bailey:Convent Housekeeper;Russell Tovey:Young Man with Earring;Rosalind Knight:Old Nun;Jamie Parker:Estate Agent;Geoffrey Streatfeild:Alan's Partner;June Watson:Woman at Day Centre;George Taylor:Policeman;Richard Banks:Neighbour;Aaron Neil:Grocer;Jessica Bastick-Vines:Pauline and Rufus' Daughter;Cecilia Noble:Miss Briscoe;Clare Hammond:Young Miss Shephard;Sam McArdle:The Biker;Giles Cooper:Passer-By;Sam Spruell:Another Young Man;Harriet Thorpe:Customer;Nicholas Burns:Giles Perry;Alan Bennett:Alan Bennett (2014);Andrew Knott:Ambulance Man;Selina Cadell:Lady Wiggin