Four old school friends reunite to attempt the epic coast to coast walk, across the United Kingdom. As their journey unfolds, this comically incompatible foursome walk full tilt into their mid-life crises.
| Actor | Role |
|---|---|
 Ned DennehyJulian | Julian |
 Jeremy SwiftSteve | Steve |
 Karl TheobaldKeith | Keith |
 Emma PiersonJen | Jen |
 Katie LyonsCaroline | Caroline |
 Richard LumsdenGordon | Gordon |
| JJustine BaileyBarmaid | Barmaid |
 Zac BarkerTeenage Keith | Teenage Keith |
| TTorben BettsHelpful Walker | Helpful Walker |
 Madeleine BowyerSusan | Susan |
| CCharlie ConcannonBoy on Beach | Boy on Beach |
| JJohn DoullCab Driver | Cab Driver |
 Colm GormleyGordon's Dad | Gordon's Dad |
| JJohn HowarthGolf Club Manager | Golf Club Manager |
| EEmma KeeleGordon's Mum | Gordon's Mum |
| BBen LevyYoung Gordon | Young Gordon |
| DDaniel LevyTeenage Gordon | Teenage Gordon |
| BBobby MarkhamTeenage Steve | Teenage Steve |
| EEdward MooreJack | Jack |
| LLewis OsbourneTeenage Julian | Teenage Julian |
 Rupert SimonianLuke | Luke |