| Episode cast overview, first billed only: |
 | Julian Barratt | - | Himself - Narrator (voice) |
 | Mark Davies | - | Himself - Control Room Assistant |
| Jane Oakes | - | Herself - Station Supervisor |
| Andy Hogg | - | Himself - Duty Manager, Network Operations Centre |
| Neringa Simiene | - | Herself - Night Shift Cleaning Supervisor |
| Lee Stevens | - | Himself - Site Manager |
| Bernie Webb | - | Himself - Chief Engineer |
| Mark Jenner | - | Himself - Station Supervisor |
| Craig Rodgers | - | Himself - Site Supervisor |
| David Waboso | - | Himself - Director of Capital Programmes |
| Johanna Dunne | - | Herself - Ticket Clerk |
| Adrian McCabe | - | Himself - Customer Service Assistant |
| Waseem Malick | - | Himself - Station Supervisor |
| Danny Horton | - | Himself - Train Maintainer |
| Peter May | - | Himself - Station Staff |
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