| Name | Character | Episodes |
|---|---|---|
| Charlie Murphy | Siobhan Delaney | 28 |
| Tom Vaughan-Lawlor | Nigel "Nidge" Delaney | 28 |
| Peter Coonan | Francis "Fran" Cooney | 24 |
| Killian Scott | Thomas "Tommy" Daly | 22 |
| Mary Murray | Janet | 18 |
| Robert Sheehan | Darren Tracey | 16 |
| Aoibhinn McGinnity | Patricia "Trish" Delaney | 16 |
| Laurence Kinlan | Eric "Elmo" Creed | 16 |
| Brían F. O'Byrne | Inpector Mick Moynihan | 12 |
| Aidan Gillen | John Boy Power | 10 |
| Ruth Bradley | Mary Tracey | 10 |
| Ruth Negga | Rosemary "Rosie" Moynihan | 10 |
| Art Campion | Stephen "Stumpy" Doyle | 10 |
| Barry Keoghan | Wayne | 6 |
| Mark Dunne | Adrian "Ado" Kenny | 6 |
| Gavin Drea | Luke | 6 |
| Lynn Rafferty | Nadine | 6 |
| John Connors | Patrick | 6 |
| Nigel Mercier | Doctor | 6 |
| Peter Gowen | Pat | 5 |
| Denise McCormack | Linda | 4 |
| Louisa Harland | Kayleigh | 4 |
| Brian Gleeson | Hughie Power | 4 |
| Gerard Kelly | Compo Joe | 2 |
| Janet Moran | Ann Byrne | 2 |
| Robbie Walsh | Jimmy Byrne | 2 |
| Aaron Monaghan | Martin | 1 |
| Amy Shiels | Danielle | 1 |
| Kelly Thornton | Kellie | 1 |
| John Connors | Patrick Ward | 1 |