 | Elijah Wood als John M. Brinnin |
 | Celyn Jones als Dylan Thomas |
 | Kelly Reilly als Caitlin |
 | Steven Mackintosh als Jack |
 | Shirley Henderson als Shirley |
 | Kevin Eldon als Stanley |
 | Andrew Bicknell |
 | Adam Gillen |
 | Nicola Duffett |
 | Steve Speirs |
 | Ken Drury |
 | Maimie McCoy |
 | Richard Brake |
 | Polly Hemingway |
 | Sue Maund |
 | Weston Gavin |
| Celyn Jones | Writer |
| Andy Goddard | Director |
| Andy Goddard | Writer |
| Matthew Hywel-Davies | Supervising Art Director |
| Andy Evans | Producer |
| Andrew Riach | Producer |
| Adam Partridge | Executive Producer |
| Steve Clark-Hall | Executive Producer |
| Gruff Rhys | Music |
| Chris Seager | Director of Photography |
| Mike Jones | Editor |
