🚂 British Diesel Locomotives – The Power That Replaced Steam 🇬🇧 When steam finally began to fade from Britain’s railways in the late 1950s, a new age of power and progress rolled onto the main lines — the diesel locomotive. From the growl of the Class 37s and the thunder of the Class 40s, to the stylish Class 55 Deltics and rugged Class 47s, these machines defined an era of transition, innovation, and speed. Each class had its own story — some loved, others less successful — but all left a la