| Name | Character | Episodes |
|---|---|---|
| Emily Watson | Janet Leach | 2 |
| Dominic West | Fred West | 2 |
| Monica Dolan | Rose West | 2 |
| Selin Hizli | Mae West | 2 |
| Gerard Horan | Howard Ogden | 2 |
| Samuel Roukin | Detective Constabe Darren Law | 2 |
| Robert Glenister | Detective Superintendent John Bennett | 2 |
| Sylvestra Le Touzel | Detective Constable Hazel Savage | 2 |
| Anthony Flanagan | Mike | 2 |
| James McArdle | Stephen West | 2 |