| John Cleese | .... | Archie Leach |
| Jamie Lee Curtis | .... | Wanda Gerschwitts |
| Kevin Kline | .... | Otto West |
| Michael Palin | .... | Ken |
| Maria Aitken | .... | Wendy Leach |
| Tom Georgeson | .... | George Tomson |
| Patricia Hayes | .... | Mrs. Coady (Dog Lady) |
| Geoffrey Palmer | .... | Judge |
| Cynthia Cleese | .... | Portia Leach |
| Mark Elwes | .... | Customer in Jeweller's Shop |
| Neville Phillips | .... | Manager of Jeweler's Shop |
| Peter Jonfield | .... | Inspector Marvin |
| Ken Campbell (I) | .... | Bartlett |
| Al Ashton | .... | Warder |
| Roger Hume | .... | Locksmith |
| Roger Brierley | .... | Davidson |
| Llewellyn Rees | .... | Sir Jake |
| Michael Percival | .... | Percival |
| Kate Lansbury | .... | Magistrate |
| Robert Cavendish | .... | Copper |
| Andrew MacLachlan | .... | Eebedee |
| Roland MacLeod | .... | Vicar |
| Jeremy Child (I) | .... | Mr. Johnson |
| Pamela Miles | .... | Mrs. Johnson |
| Tom Piggot Smith | .... | Child Johnson (13 year old) |
| Katherine John | .... | Child Johnson (10 year old) |
| Sophie Johnstone | .... | Child Johnson (8 year old) |
| Kim Barclay | .... | Nanny |
| Sharon Twomey | .... | 1st Junior Barrister (Defence Counsel) |
| Patrick Newman | .... | 2nd Junior Barrister (Defence Counsel) |
| David Simeon | .... | Clerk of Court (old bailey) |
| Imogen Bickford-Smith | .... | Stenographer |
| Tia Lee | .... | Junior Barrister (Prosecutor Counsel) |
| Robert Putt | .... | Police Officer (Old Bailey) |
| Waydon Croft | .... | 1st Prison Officer |
| John Dixon | .... | 2nd Prison Officer |
| Anthony Pedley | .... | Irate Driver |
| Robert McBain | .... | Hotel Clerk |
| Clare McIntyre | .... | Airline Employee |
| Charu Bala Chokshi | .... | Indian Cleaner |
| Stephen Fry | .... | Hutchison |