Best friends Ruth and Megan run a vintage shop in North London. One day, their lives are forever turned upside down when an abandoned time machine appears outside their shop. Mixing reality with fantasy, we explore the strange and outlandish world of The Unreason, as the girls traverse space and time sourcing items to sell.
| Actor | Role |
|---|---|
| RRuth SyrattRuth | Ruth |
| MMegan StevensonMegan | Megan |
 Stephen FryNarrator (voice) | Narrator (voice) |
 Johnny VegasRobert / Botty | Robert / Botty |
 Brian BovellRalph Sheldrake | Ralph Sheldrake |
 Sophie ThompsonValerie | Valerie |
 Guy HenryMartin | Martin |
 Tony WayPeter | Peter |
 Tom LenkAlex | Alex |
 Laura AikmanYoung Valerie | Young Valerie |
 Kiell Smith-BynoeYoung Ralph | Young Ralph |
 Jane HorrocksThe Aviator | The Aviator |
 Mark HeapThe Regency Dandy | The Regency Dandy |
| AAnya RiversTracey | Tracey |
 Brian BlessedGavin the Octopus (voice) | Gavin the Octopus (voice) |
| SSimon KillickRick | Rick |
| RRosa GeeYoung Ruth | Young Ruth |
| MMatthew MichaelsonBuilder Dave | Builder Dave |
| EEd FrancisGuy in Band | Guy in Band |
| PPat O'ConnorBrenda | Brenda |
 James McClellandToilet Man | Toilet Man |
 Alex HorneThe Unreason Band (as the Horne Section) | The Unreason Band (as the Horne Section) |