Thomas the Tank Engine Wikia


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This article is about the steam engine. You may be looking for the diesel engine.

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"I'll not let it happen again..."
This article has been protected due to the threat of vandalism.

"Well, go on. Aren't you going to impress us with your thoughts after all?"
— Mike, Jock the New Engine

  • Based on: Ravenglass and Eskdale Railway's River Irt
  • Builder: Duffield Bank
  • Designer: Sir Arthur Heywood
  • Built: 1894
  • Configuration: 0-8-2, originally 0-8-0T
  • Arrived on Sodor: 1967

Bert is the quietest of the Arlesdale Railway engines. He is the oldest out of the engines including Rex, Mike, and himself.


Bert worked on an unnamed line in England until 1967, at which time it closed down and he, Rex and Mike were sent to Sodor to work the Arlesdale Railway. Some time after his arrival, Bert took offence when the Reverend W. Awdry and the Reverend Teddy Boston accidentally sprayed him with mud while passing him in their car, and in retaliation Bert drenched the Reverend Teddy Boston with water when he took a ride in Bert's cab. However, both parties made up and as a result, Bert was featured in the Reverend W. Awdry's next book, Small Railway Engines.

For a long time Bert had trouble with steaming, but this has stopped since he was rebuilt into a narrow gauge outline with a taller chimney, dome, cab, and a larger boiler in 1973, giving his current appearance.


Bert is friendly, and somewhat clever and cynical.


Bert is based on the Ravenglass and Eskdale Railway's River Irt. River Irt also appeared in a seventeenth season learning segment which featured Mr. Perkins.


Bert is painted NWR blue with red-and-yellow lining. He has a brass dome, red nameplates with yellow writing mounted each side of his boiler and "Arlesdale" written on his tender in yellow. In the Railway Series his wheels are painted black, but in the television series they are blue.


Railway Series

Television Series


Voice Actors


  • Bert's rebuilt form has never been featured in either the Railway Series or television series.
  • In Sticking Power, Bert is said to be younger than Rex and Mike. However, this is incorrect, as Bert is much older than the two of them.
  • In the television series, there is a problem with Bert's chassis. His front driving wheel is in front of his cylinder, where as it is behind it in both the Railway Series and on his basis. As a result, there is only one rod connected to these wheels, causing his wheelbase and side rods to be distorted.



Merchandise Gallery

Arlesdale Railway
RexBertMikeFrankJockBlister I and Blister IISigrid of Arlesdale

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