- “The engines on the Mainland say you're even more fun than me!”
- ―Charlie to Thomas, Play Time, thirteenth season
Many of the engines on the North Western Railway originate from various railways on the Mainland.
In the current television series, Spencer, Flying Scotsman, Connor, Caitlin, Samson, Theo, Lexi, Merlin, Frankie, Hurricane, Logan, and several diesel shunters are the only known engines working on the Mainland railway.
- 2017 - Journey Beyond Sodor (cameo)
- 2017 - Etienne Visits London (cameo)