| Simon Russell Beale Widmerpool | | James Purefoy Nicholas Jenkins |
| James Fleet Moreland | | Jonathan Cake Peter Templer |
| Paul Rhys Charles Stringham | | Claire Skinner Jean |
| Miranda Richardson Pamela Flitton | | Adrian Scarborough JG Quiggin |
| Edward Fox Uncle Giles | | John Standing Nicholas Jenkins (older) |
| Gillian Barge Mrs Erdleigh | | Annabel Mullion Mona |
| Oliver Ford Davies Le Bas | | Robin Bailey Uncle Alfred |
| Nicholas Jones Bob Duport | | Nigel Lindsay Odo Stevens |
| Nicholas Rowe David Pennistone | | Michael Williams Ted Jeavons |
| Sarah Badel Lady Molly | | Zoë Wanamaker Audrey Maclintick |
| Harriet Walter Mildred | | Caroline Harker Priscilla |
| Eileen Atkins Brightman | | James Callis Gwinnett |
| Paul Brooke Maclintick | | James D'Arcy Nicholas Jenkins (student) |
| Alan Bennett Sillery | | Joanna David Isobel (older) |
| Emma Fielding Isobel | | John Gielgud St. John Clarke |
| Frank Middlemass Edgar Deacon | | Chris Lang Chips Lovell |
| Richard Pasco Sir Magnus Donners | | Patrick Godfrey General Conyers |
| Tony Osoba Colonel Flores | | Nicola Walker Gypsy Jones |
| Emily Mortimer Polly Duport | | Robert Pugh Biggs |
| Lucy Fleming Jean (older) | | Julian Wadham General Liddament |
| Jamie Glover Robert Tolland | | Andrew Havill Sunny Farebrother |
| Grant Thatcher Mark Members | | Colin Baker Canon Fenneau |
| Mark Dexter Tompsitt | | Richard Leaf Barnabas Henderson |
| Carmen du Sautoy Miss Weedon | | Amanda Walker Mrs. Conyers |
| Kate Cavanagh Billson | | Anastasia Hille Matilda |
| James Villiers Buster Foxe | | Danny Worters Nicholas Jenkins (boy) |
| Geraldine Alexander Susan | | Osmund Bullock Erridge |
| Sarah Crowden Miss Orchard | | Barbara Durkin Betty |
| Nicola King Mrs Jenkins | | David Yelland Mr Jenkins |
| David MacCreedy Bracey | | Bryan Pringle Smith |
| Michael Wade Dr Brandreth | | Tim Wylton Albert |
| Rohan McCullough Flavia Wisebite | | Kevin Colson Louis Glober |
| Jeremy Child Roddy Cutts | | Matthew Sim Scorpio Murtlock |
| Bobby Webster Templer (student) | | Amy Simcock Jean (student) |
| Luke de Lacey Stringham (student) | | Rupert Wickham Jimmy Stripling |