Filmed in homage to his original TV series, this fictionalised account follows Dave Allen from childhood to becoming one of the UK and Ireland's comedy greats, with just a whiskey, a cigarette and nine-and-a-half fingers. Dave Allen is played by Aidan Gillen
| Actor | Role |
|---|---|
 Aidan GillenDave Allen | Dave Allen |
 Ian McElhinneyPriest | Priest |
 Julian Rhind-TuttRichard Stone | Richard Stone |
 Conleth HillJohn O'Mahony | John O'Mahony |
 Ferdia Walsh-PeeloDave, aged 18 | Dave, aged 18 |
 Robert BathurstCharles Curran | Charles Curran |
 Pauline McLynnSister Mary | Sister Mary |
 Miranda HennessySketch Artist | Sketch Artist |
 Tommy TiernanCully Tynan O'Mahony | Cully Tynan O'Mahony |
 Joanne CrawfordJean O'Mahony | Jean O'Mahony |
 Simon DayLew Grade | Lew Grade |
| SSam HardyJohn, aged 7 | John, aged 7 |
 Daniel KendrickKenny | Kenny |
 Ely SolanDave, aged 12 | Dave, aged 12 |
| DDavid SeymourSketch Artist | Sketch Artist |
 Gareth O'ConnorJohn, aged 20 | John, aged 20 |
| AAbe SmythSketch Artist | Sketch Artist |
 Senan JenningsDave, aged 5 | Dave, aged 5 |
| CColin AshTailor | Tailor |
 Seán TreacyJohn aged 14 | John aged 14 |
| SSteven ShaplandSketch Artist | Sketch Artist |
 Jonathan JulesComedian | Comedian |
| BBrett WilsonClive | Clive |
 Richard ClementsMartin | Martin |
 Mark QuigleyButlins Camper (uncredited) | Butlins Camper (uncredited) |