Diesel 40125, nicknamed "Old Stuck-Up" by James, is a diesel engine who once visited the North Western Railway on loan from British Railways.


The Railway Series

BoCo was to show the visiting diesel around, but when he saw steam engines in the shed he refused to go further and insulted the railway for keeping them in service. An angry BoCo left him outside while he went inside the shed himself, and a furious James nicknamed him "Old Stuck-Up".

The next day, Old Stuck-Up was about to leave when he remembered that he needed refuelling. He attempted to use BoCo and Bear's part of the shed to be refuelled and cleaned, but slid on the oily tracks and crashed into the back of the shed. He was sent home in disgrace after being talked to severely by the Fat Controller; BoCo noted that while he could not hear everything, he did not think it sounded particularly polite.


Old Stuck-Up is pompous, rude and arrogant like a lot of unfriendly diesels, and believes that steam power is subpar to diesel.

Technical Details


Old Stuck-Up is based on a BR Class 40 1Co-Co1. Class 40 and D782 are also members of this class. 200 members of this class were built from 1958 to 1962, and the last was withdrawn in 1985. They were given the nickname "Whistlers" because of the strange whistling noise their engines would make. Seven Class 40s are preserved at the National Railway Museum including D200, the first one built.

Unlike most diesels in the Railway Series, Old Stuck-Up's number wasn't fictional. The real 40125 was built in December 1960 as D325 and was the first member of the class built with "split" headcode boxes. It was withdrawn from service in May 1981 and scrapped at Swindon Works in December 1983.


Old Stuck-Up is painted in the British Railways' Rail Blue with yellow warning panels. His number, 40125, is painted on the sides of his cab in white.



  • The events of "Old Stuck-Up" likely took place before before the real 40125 was withdrawn from service in May 1981 and scrapped in December 1983.


The Railway Series

Main Series


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