Cast complete, awaiting verification
| Tim Bevan | ... | Self - Producer | |
| Richard Curtis | ... | Self - Writer-Director | |
| Colin Firth | ... | Jamie | |
| Hugh Grant | ... | Prime Minister | |
| Duncan Kenworthy | ... | Self - Producer | |
| Laura Linney | ... | Sarah | |
| Martine McCutcheon | ... | Natalie | |
| Lúcia Moniz | ... | Aurelia | |
| Liam Neeson | ... | Daniel | |
| Bill Nighy | ... | Billy Mack | |
| Rodrigo Santoro | ... | Self / Karl | |
| Emma Thompson | ... | Karen | |
| Rowan Atkinson | ... | Rufus - Jewellery Salesman (archive footage) (uncredited) | |
| Thomas Brodie-Sangster | ... | Sam (archive footage) (uncredited) | |
| Gregor Fisher | ... | Joe (archive footage) (uncredited) | |
| Elisabeth Margoni | ... | Eleonore (archive footage) (uncredited) | |
| Olivia Olson | ... | Joanna Anderson (archive footage) (uncredited) | |
| Nina Sosanya | ... | Annie (uncredited) | |
Produced by
| Colin Burrows | ... | producer |
| David Castell | ... | producer |
Editing by
| Sophia Kotretsos | ... | (edited by) |