| Darsteller | Rolle |
|---|---|
| Hugh Grant | Jeremy Thorpe (6) |
| Ben Whishaw | Norman Scott (6) |
| Patricia Hodge | Ursula Thorpe (6) |
| Alex Jennings | Peter Bessell (6) |
| Flora Montgomery | Diane Kelly (4) |
| Jason Watkins | Emlyn Hooson (4) |
| Blake Harrison | Andrew 'Gino' Newton (4) |
| Paul Hilton | David Holmes (4) |
| Monica Dolan | Marion Thorpe (4) |
| Morgan Watkins | Mike Steele (4) |
| Andrew French | Sergeant at Arms (4) |
| Michele Dotrice | Edna Friendship (4) |
| Rhys Parry Jones | John Le Mesurier (4) |
| Naomi Battrick | Diana Stainton (4) |
| Marianne Oldham | Stella Levy (4) |
| Alice Orr-Ewing | Caroline Allpass (4) |
| Dyfan Dwyfor | George Deakin (4) |
| Nick Malinowski | Returning Officer (4) |
| Robert Ryan | Political Supporter (4) |
| Caleb Roberts | Daniel Badwah (4) |
| Arabella Neale | Jeremy's Secretary (4) |
| Paul Freeman | Sir Joseph Cantley (2) |
| David Bamber | Lord Arran (2) |
| Michael Culkin | Reginald Maudling (2) |
| Eve Myles | Gwen Parry-Jones (2) |
| Patrick Marber | Peter Taylor Q.C (2) |
| Adrian Scarborough | George Carman Q.C (2) |
| Jonathan Hyde | David Napley (2) |
| Anthony O'Donnell | Leo Abse (2) |
| Joshua Richards | Manchester Policeman (2) |
| Tim Chipping | Prison Guard (2) |
| Rhys Meredith | Gareth Williams (2) |
| Steffan Rhodri | D.C.S Michael Challes (2) |
| Nigel Hastings | Stable Owner (2) |
| Nicholas Blane | Norman Van De Vater (2) |
| Chris Ashby | Messenger (2) |
| Zina Badran | Clerk of the Court (2) |
| Brett Allen | Anthony Johnson (2) |
| Daniel Weyman | BBC TV Reporter (2) |
| Peter F. Gardiner | David Steel (2) |
| Phelim Kelly | Reporter (2) |
| Patrick Barlow | Captain Myers (2) |
| Nicola Goodchild | New Returning Officer (2) |
| Fisayo Akinade | Clive Otunde (2) |
| Chris Carrico | Auberon Waugh (2) |
| Ben Moor | BBC Radio Interviewer (2) |
| Pablo Raybould | Auctioneer (2) |
| Jasmyn Banks | Bridget (2) |
| Susan Wooldridge | Countess of Arran (2) |
| Anthony Kaye | Tall Man (2) |
| Dannie Pye | Ken (2) |
| David J Biscoe | DI Robert Huntley (2) |
| Paul Sloss | Stuart Kuttner (2) |
| John Bett | Lord Kilmuir (2) |
| Lucy Briggs-Owen | Sue Scott (2) |
| Charlotte Lucas | Janet Lawrence (2) |
| Andrew Reed | Liberal Party Supporter (2) |
| Martin Bratanov | Photographer (2) |
| Shyko Amos | Bronte Bisama (2) |
| Daryl McCormack | Luke Mackenzie (2) |
| Michelle Fox | Lyn (2) |
| Tom Girvin | Partygoer (2) |
| Keith Hide | J.J. Blaine of Special Branch (2) |
| David Palmstrom | Welsh Policeman (2) |
| Tim Hudson | Ted Lethaby (2) |
| Jonathan Addis | John Pardoe MP (2) |
| Chris Grahamson | Minehead Constable (2) |
| Alex Murdoch | Minehead Magistrate (2) |
| Beth Tuckey | Celia Kettle-Williams (2) |
| Peter Bessell | Self (2) |
| Joseph Cantley | Self (2) |
| Matthew Marcelis | Young Policeman (2) |
| Norman Scott | Self (2) |
| Jeremy Thorpe | Self (2) |
| Marion Thorpe | Self (2) |
| Peter Cook | Judge Joseph Cantley (2) |
| Jude North | Partygoer 'smalls' |