| Maggie Smith |
Miss Shepherd |
| Alex Jennings |
Alan Bennett |
| Jim Broadbent |
Underwood |
| Frances de la Tour |
Mrs Vaughan Williams |
| Roger Allam |
Rufus |
| Deborah Findlay |
Pauline |
| Gwen Taylor |
Mam |
| Pandora Colin |
Fiona Perry |
| Nicholas Burns |
Giles Perry |
| David Calder |
Leo Fairchild |
| Marion Bailey |
Housekeeper at Convent |
| Cecilia Noble |
Miss Briscoe, Social Worker |
| Claire Foy |
Lois, Social Worker |
| Clare Hammond |
Young Margaret Fairchild |
| Jamie Parker |
Estate Agent |
| Richard Griffiths |
Sam Perry |
| Dominic Cooper |
Actor |
| Giles Cooper |
Passer By |
| Tom Klenerman |
Tom Perry |
| James Corden |
Market Trader |
| George Taylor |
Policeman |
| Eleanor Matsuura |
Interviewer |
| Selina Cadell |
Lady Wiggin |
| Charlie Hancock |
Man Shaking Van |
| Dan Raza |
Man Shaking Van |
| Dermot Crowley |
Priest |
| Clive Merrison |
Man in Confessional |
| Samuel Barnett |
Out of Work Actor |
| Russell Tovey |
Young Man with Earring |
| Samuel Anderson |
Jehovah's Witness |
| Michelle Reid |
Jehovah's Witness |
| Sam Spruell |
Another Young Man |
| Rosalind Knight |
Old Nun |
| Elliot Levey |
Theatre Director |
| Sarah Lieberson |
Stage Manager |
| Hannah Watson |
Broadstairs Pianist |
| Linda Broughton |
Edith Fairchild |
| Stephen Campbell Moore |
Doctor at Old Peoples Home |
| Sacha Dhawan |
Doctor at Gloucester Crescent |
| Andrew Knott |
Ambulance Man |
| Lorna Brown |
Day Care Centre Worker |
| June Watson |
Woman in Day Centre |
| Sam McCardle |
Biker |
| Tony Van Silva |
God |
| Geoffrey Streatfeild (as Geoffrey Streatfield) |
Alan's Partner |
| Alan Bennett |
Self |
