| Credited cast: |
 | Huw Edwards | - | Himself - Presenter |
 | Nick Robinson | - | Himself - BBC Political Editor |
| Chris Grayling | - | Himself - Shadow Home Secretary - Conservative (as Chris Grayling MP) |
| Sarah Teather | - | Herself - Housing Spokesperson - Liberal Democrat (as Sarah Teather MP) |
| Tessa Jowell | - | Herself - Olympics Minister - Labour (as Tessa Jowell MP) |
| Rest of cast listed alphabetically: |
| John Bercow | - | Himself - Speaker of the House of Commons (as John Bercow MP) |
 | Gordon Brown | - | Himself |
| David Cameron | - | Himself |
| Nick Clegg | - | Himself |
| Harriet Harman | - | Herself |
| Laura Kuenssberg | - | Herself |
 | Peter Mandelson | - | Himself |
| Claire Marshall | - | Herself |
 | Prince Philip | - | Himself |
 | Queen Elizabeth II | - | Herself |
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