Artwork used to advertise the London (Euston) to Glasgow Coronation Scot service of the LMS in the 1930s, shown ascending Shap Fell. The 4-6-2 type steamers built to haul it were the most powerful passenger steam locomotives ever built for the British railway network, estimated at the equivalent of 3,300 hp. In speed trials with a special train in 1937 just south of Crewe, the train achieved a speed of 114 miles per hour (183 km/h), narrowly beating the previous record held by the LNER.
The first 5 of the Coronation class locos from 1937 were streamlined and painted Caledonian Railway blue with silver horizontal lines. The next 5 were painted red with gold lines. The remaining 28 weren't streamlined as it was considered the slight benefits for speed was outweighed by the increased weight and more difficult maintenance. After WW2 the streamlining was removed from the first ten.