Several policemen patrol different locations on Sodor.
Once, a policeman came to argue with the Fat Controller after Thomas was found to have travelled down the Quarry Tramroad illegally, without cow-catchers and side-plates. Another time, Madge once sprayed one with snow and he was later present at the Narrow Gauge Engine Rally.
In Sodor's Legend of the Lost Treasure, the policemen arrested Sailor John for attempting to steal the treasure. There was also a policeman present during the rescue of a whale at Bluff's Cove. In The Great Race, a policeman can be seen dancing during Thomas' fantasy song Streamlining.
In the twentieth season, one was on hand after Thomas derailed after crashing into a pile of debris that Max and Monty dumped over a bridge on his branch line. He subsequently berated them and ordered them to get it to the dump by morning.
- Keith Wickham (UK/US)
- Hirohiko Kakegawa (Japan; Thomas in Trouble)
- Ryōichi Tanaka (Japan; Steam Roller)
- Yasunori Masutani (Japan; Bulls Eyes)
- Kunihiro Kawamoto (Japan; Sodor's Legend of the Lost Treasure and Mucking About)
- Werner Cartano (Germany; Audio Books only)