British Rail Class 24 (Sulzer Type 2) The British Rail Class 24, also known as the Sulzer Type 2, was one of the quiet heroes of Britain’s diesel revolution. Built between 1958 and 1961 as part of the 1955 Modernisation Plan, these locomotives helped bridge the gap between steam and the modern railway we know today. In this video, we explore the full story of the Class 24 — from its rugged Sulzer engine and distinctive early liveries, to its hard-working life across Britain. You’ll discover how