| Undercover follows Maya, the first black Director Of Public Prosecutions. Just as she is about to take up the post and her life comes under intense public scrutiny, she learns that that her husband Nick has been lying to her for years. Twenty years ago Nick was a fearless and dedicated undercover officer, infiltrating organisations considered a danger to society because of their political beliefs. Nick built himself a fake past and now with his wife unsuspecting and his conscience killing him – his secret identity may compromise the new Director of Public Prosecutions. |
| Name | Character | Episodes |
|---|---|---|
| Vincent Regan | Dominic Carter | 6 |
| Sophie Okonedo | Maya Cobbina | 6 |
| Dennis Haysbert | Rudy Jones | 6 |
| David Schofield | Alex Brady | 6 |
| Phil Davis | Jimmy | 6 |
| Adrian Lester | Nick Johnson | 6 |
| Angel Coulby | Julia Redhead | 6 |
| Leanne Best | Abigail Strickland | 6 |
| Mark Bonnar | John Halliday | 6 |
| Alistair Petrie | Robert Greenlaw | 6 |
| Danny Webb | John Corrigan | 6 |
| Derek Riddell | Paul Brightman | 6 |
| Daniel Ezra | Dan Johnson | 6 |
| Ṣọpẹ́ Dìrísù | Michael Antwi | 6 |
| Tamara Lawrance | Clemency Johnson | 6 |
| Jude Akuwudike | Al | 6 |
| Dennis Haysbert | Rudy Jones (archive footage) (uncredited) | 1 |
| Adrian Schiller | Peter Grace | 1 |
| Helen Anderson | Helen Richardson | 1 |