Mainline steam trains in Great Britain
The most famous steam locomotive operating on the British main line is the 1923 built "Flying Scotsman". After being taken into public ownership in 2004, following a decade long refit it returned to mainline service in 2016. The fastest steam locomotive ever built, the 1938 built "Mallard", was also certified for main line operation briefly in the 1980s.
HŽ series 1142
They were manufactured by the Končar factory (named after Rade Končar). Originally, they were a Yugoslav development (class 442), meant to be used in 80s as the fastest electrical powered locomotive. They remain the fastest Croatian locomotives today. At that time, as higher speeds became more and more important, former Yugoslav Railways () needed a locomotive, which could cope with the 160 km/h speed reachable on some of the mainlines. Therefore, this series was produced. It was planned that some of this units would be delivered throughout the then still existing SFRY. The dissolution stopped these plans, leaving HŽ as the only company, which has this class, from all the former SFRY states.