Derek, also known as Paxman Diesel, The Paxman or simply Paxman, is a large green diesel engine who is known for his initial "teething" troubles. The Fat Controller realised Bill and Ben needed help with their work and sent for Derek, but Derek's cooling system overheated and breaks down on...

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Derek is a fictional standard gauge diesel created by Britt Allcroft, David Mitton and David Maidment who came to help Bill and Ben at the China Clay Quarry. He is based on a BR Class 17. According to David Maidment, Derek was originally envisioned as a …

Derek is a jolly, enthusiastic Diesel engine, who was brought in to assist Bill, Ben, and BoCo at the China Clay quarry. Unfortunately, due to his engine, he is highly prone to teething troubles, namely overheating and suffering frequent breakdowns, for …

Derek the Diesel (also labeled as just Derek) is a friendly diesel who has problems with his cooling system. Derek the Diesel was formally known as Paxman Diesel.

Derek (also labeled as Derek the Diesel) is a friendly diesel who has problems with his cooling system. Derek the Diesel was formally known as Paxman Diesel. The twins, Bill and Ben, who work the quarries and claymines near Brendam Docks, discovered that as much as they dislike diesels, Derek is...

Derek is a jolly, enthusiastic Diesel engine, who was brought in to assist BoCo, Bill and Ben at the China Clay Pits. Unfortunately, due to his engine, he is highly prone to teething troubles, namely overheating and suffering frequent breakdowns, for which he is apologetic for the inconvenience.

Derek was the first non-Awdry standard gauge engine to be introduced into the television series. Derek was not named in any of his appearances as in his debut episode, Double Teething Troubles : he was only referred to as the new Diesel , or simply Diesel and in the music video Trying , the lyrics say "Who's that straining up the hill?"

Derek is a green diesel who is known for his initial "teething" troubles. Sir Topham Hatt realised Bill and Ben needed help and sent for Derek, but Derek's cooling system overheated on Gordon's Hill and BoCo had to come to the rescue.

Derek, originally known as Paxman, is a diesel engine who is very friendly to Bill and Ben. According to Editor Topham Hatt, he has dental problems, so he needs to visit the doctor, who is Victor.