| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Michael Lennox | Crew | Directing | Director | 12 |
 Amelia Crowley | Cast | Actress | Deirdre Mallon | 7 |
 Amy Huberman | Cast | Actress | Tara | 1 |
 Ardal O'Hanlon | Cast | Actor | Eammon | 2 |
 Barbara Adair | Cast | Sister Declan | 1 | |
 Bill Clinton | Cast | Actor | Self (Archive Footage) | 1 |
 Bronagh Gallagher | Cast | Actress | The Commitment | 1 |
 Chelsea Clinton | Cast | Actress | Chelsea Clinton | 1 |
 Conleth Hill | Cast | Actor | Carlos Santini | 1 |
 Eleanor Methven | Cast | Actress | Aunt Bridie | 1 |
 Fatboy Slim | Cast | Actor | Self | 1 |
 Gary Barlow | Cast | Actor | Himself (Archive Footage) | 1 |
 Gerard Jordan | Cast | Security Guard | 1 | |
 Jason Orange | Cast | Actor | Himself (Archive Footage) | 1 |
 Justine Mitchell | Cast | Actress | Adult Janette | 1 |
 Liam Neeson | Cast | Actor | Chief Inspector Byers | 2 |
 Olwen Fouéré | Cast | Sheila | 1 | |
 Robbie Williams | Cast | Actor | Himself (Archive Footage) | 1 |
 Robert Calvert | Cast | Actor | Jim | 4 |
 Sinéad Keenan | Cast | Actress | Aideen | 1 |
 Tommy Tiernan | Cast | Actor | Da Gerry Quinn | 19 |
 Emmett Scanlan | Cast | Actor | Madstab | 1 |
 Howard Donald | Cast | Actor | Himself (Archive Footage) | 1 |
 Mark Owen | Cast | Actor | Self (archive footage) | 1 |
 Paul Reid | Cast | Actor | Dead Robert / Declan | 1 |
 Bronagh Waugh | Cast | Actress | Cathy Maguire | 1 |
 Ciaran Flynn | Cast | Actor | Ukranian Lad 2 | 1 |
 Conor MacNeill | Cast | Actor | Hans | 1 |
 Michael Byers | Cast | Officer Lennox | 1 | |
Paul Mallon | Cast | Dennis | 5 | |
 Ryan McParland | Cast | Actor | Jonjo | 1 |
 Siobhán McSweeney | Cast | Actress | Sister Michael | 19 |
 Damien Molony | Cast | Actor | Gabriel | 1 |
 Dylan Llewellyn | Cast | Actor | James Maguire | 19 |
 Foy Vance | Cast | Actor | Singer | 1 |
 Art Campion | Cast | Actor | Father Peter | 3 |
 Anthony Boyle | Cast | Actor | David Donnelly | 2 |
 Brenock O'Connor | Cast | Actor | Jon | 1 |
 Laurie Kynaston | Cast | Actor | Philip | 1 |
 Sean Sloan | Cast | Actor | Philip's Father | 1 |
 Chris Lew Kum Hoi | Cast | Actor | Kris | 1 |
 Julian Moore-Cook | Cast | Actor | Paddy | 1 |
 David Ireland | Cast | Sean Devlin | 3 | |
 Julia Dearden | Cast | Actress | Maureen Malarkey | 3 |
 Martin Quinn | Cast | Actor | Wee Cousin Rob | 1 |
 Saoirse-Monica Jackson | Cast | Actress | Erin Quinn | 19 |
 Diona Doherty | Cast | Katya | 1 | |
 Niall Cusack | Cast | Actor | Father Conway | 1 |
 Shauna Higgins | Cast | Actress | Wee Ma Mary | 1 |
 Calam Lynch | Cast | Actor | John Paul | 1 |
 Tracey Lynch | Cast | Actress | Fionnula | 1 |
 James Stockdale | Cast | Actor | Tomas | 1 |
Ciaran Nolan | Cast | Radio Dispatcher | 1 | |
 Sophie Robertson | Cast | Charlene Kavanagh | 1 | |
 Leah O'Rourke | Cast | Actress | Jenny Joyce | 19 |
Phillipa Dunne | Cast | Geraldine Devlin | 6 | |
 Billy Carter | Cast | Mailman | 1 | |
 Kevin McAleer | Cast | Actor | Colm McCool | 1 |
Tobias Beer | Cast | Richard the Surgeon | 1 | |
 Jamie Lee O'Donnell | Cast | Actress | Michelle Mallon | 19 |
 Desmond Eastwood | Cast | Actor | Benny | 1 |
 Kerri Quinn | Cast | Actress | Rita | 1 |
 Philippa Dunne | Cast | Geraldine Devlin | 1 | |
 Judith Roddy | Cast | Ms. De Brún | 1 | |
Antoinette Morelli | Cast | Sales Assistant | 1 | |
 Chris Robinson | Cast | Actor | Radio Announcer | 1 |
 Beccy Henderson | Cast | Aisling | 9 | |
 Claire Rafferty | Cast | Actress | Miss Mooney | 8 |
 Alex Gaumond | Cast | Rob | 1 | |
 Jessica Reynolds | Cast | Actress | Wee Deirdre | 1 |
Zoe Brown | Cast | Baby Anna | 2 | |
Michael Hooley | Cast | Soldier 1 | 1 | |
Francis Mezza | Cast | Dee | 1 | |
 Jay Duffy | Cast | Actor | Harry | 1 |
 Donna Traynor | Cast | Actress | Donna Traynor | 7 |
Michael McGarry | Cast | Ukranian Lad 1 | 1 | |
Michael Shea | Cast | Actor | Clive / Artem | 1 |
Mya Rose McAleese | Cast | Baby Anna | 4 | |
Ava Grace McAleese | Cast | Baby Anna | 4 | |
Caoimhe Farren | Cast | Actress | Ms. Taylor | 1 |
 Luke Wilson Hanley | Cast | Actor | Soldier 2 | 1 |
 Vanessa Ifediora | Cast | Actress | Laurie | 1 |
 Serena Terry | Cast | Actress | Officer Reid | 1 |
Conor Lowry | Cast | Actor | Young Boy | 2 |
Darcey McNeeley | Cast | Actress | Cara | 1 |
Claire Keenan | Cast | Wee Janette | 1 | |
 Dearbháile McKinney | Cast | Actress | Wee Aunt Sarah | 1 |
Therese Cahill | Cast | Sister Benedict | 1 | |
Sean Coyle | Cast | BBC Radio Foyle DJ (voice) | 1 | |
Terence Keeley | Cast | Actor | Emmett | 1 |
| Person | Type | Job | Role(s) | Episodes |
