The Mainland Diesels are a group of diesel shunters who work at the Great Railway Show Yard and Bridlington Goods Yard on the Mainland. One of them is named Ulli.


Thomas & Friends

During the Great Railway Show, these diesels were seen shunting trucks around the yard for the contestants; such as the heavy train for the Strength Competition. Three of them watched the Shunting Competition.

When James went to Bridlington to search for Thomas, he bumped into one of the diesels and asked him if he had seen the tank engine, who replied he could not remember. When James provided more details, the diesel asked another diesel, Ulli, if he had seen Thomas, who replied "Nope". The diesel then explained that Bridlington was a busy goods yard and left. After finding out from Thomas' trucks that he was at the Steelworks, James tried to ask the diesel if he knew where it was, only to be ignored.

Two of the diesels appear in Thomas and the Royal Engine when Thomas arrived at a station and went to washdown after getting covered in mud.

Technical Details


The Mainland Diesels are all based on British Rail (BR) Class 08 diesel-electric shunters. In the real world, BR Class 08s were in fact the most successful shunting engines in the world with 996 of them built. Over seventy of them are preserved by heritage railways, such as the Dean Forest Railway and museums, such as the National Railway Museum. Around one-hundred BR Class 08s also remain in service on the national rail network.

Diesel, 'Arry, BertSplatter, Dodge, Paxton, Sidney and Fernando are also based on BR Class 08s along with the international orange, blue and Chinese diesels. Two BR Class 08s also appear in the Railway Series.


The Mainland Diesels are all painted in English, Welsh and Scottish Railway (EWS) orange-red and yellow. They all have black and yellow hazard stripes painted on their fronts, white ladders, yellow counterweights and red buffers.


Voice Actors


Other Diesel:

  • John Schwab (UK/US)
  • Kozo Dozaka (Japan)
  • Jorge Ornelas (Latin America)
  • Joshy Peters (Germany)


  • Ulli is the only one of the diesels to be named.[1]
  • Diesel's test model's face was reused for one of the diesels.
  • One of the diesels' faces was later reused for Fernando.


Thomas & Friends

CGI Series


* RWS only | ** T&F only
*Disclosure: Some of the links above are affiliate links, meaning, at no additional cost to you, Fandom will earn a commission if you click through and make a purchase. Community content is available under CC-BY-SA unless otherwise noted.