The Mainland Diesels are a group of diesels who work on the Mainland.


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.

Technical Details


The Mainland Diesels are based on the BR Class 08. Over seventy members of this class survive today in preservation, while around 100 remain in service on the national rail network. They were in fact the most successful shunting engines in the world, with 996 of them built. Diesel, 'Arry, Bert, Splatter, Dodge, Paxton, Sidney, Fernando and the Diesel Shunter are also based off of this engine.


The Mainland Diesels are all painted to the EWS style of colours; orange-red and yellow livery. They have black and yellow hazard stripes painted on their fronts, white ladders, yellow counterweights and red buffers.


Thomas & Friends

  • Series 23 - Grudge Match (stock footage cameo)
  • Series 24 - Thomas and the Royal Engine (two only; cameo)


  • 2016 - The Great Race (cameo)
  • 2017 - Journey Beyond Sodor (two speak; others cameo)

Music Videos

  • Series 21 - Set Friendship in Motion
  • Series 22 - All the Girls Around the World

Voice Actors


  • John Schwab (UK/US)
  • Kozo Dozaka (Japan)
  • Daniel del Roble (Latin America)
  • Joshy Peters (Germany)

Other Diesels:

  • John Schwab (UK/US)
  • Gabriel Porras (UK/US)
  • Keith Wickham (UK/US)
  • Mark Moraghan (UK/US)
  • Kozo Dozaka (Japan)
  • Jorge Ornelas (Latin America)
  • Joshy Peters (Germany)


  • Ulli is the only one of the diesels to be named.
  • Diesel's test model's face was re-used for one of the diesels.
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