The SR Q1 class is a type of austerity steam locomotive constructed during the Second World War. The class was designed by Oliver Bulleid for use on the intensive freight turns experienced during wartime on the Southern Railway network.

The SECR Q1 class was a class of 0-4-4T steam locomotives of the South Eastern and Chatham Railway. The class was rebuilt from older Stirling Q class locomotives by Harry Wainwright between 1903 and 1917 by fitting the boiler that had been designed for the H …

The Q1 class was built in 1942 in response to this need and they were the most powerful 0-6-0 locomotives to run in Britain. They also had the dubious reputation of being just about the ugliest locomotive ever to run in the country.

The class of 40 locos was built at both Brighton and Ashford Works during 1942. The Q1's greatest weakness was its restricted braking power on unfitted goods trains and it is this that prevented further batches being built after the war.

The SR Q1 Class Bulleid is a type of 0-6-0 steam locomotive designed by Oliver Bulleid for use during wartime on the Southern Railway network. They were built in 1942 by the Brighton Locomotive Works and the Ashford Locomotive Works for service in the British Royal Military during World War II...

Bulleid's Southern Railway Q1 was a great success, ably fulfilling it's role as a powerful freight engine, and remains both the last class of 0-6-0 main line steam locomotives built in Britain, and the ultimate development of this type.

The Pennsylvania Railroad class Q1, #6130, was a single experimental steam locomotive designed for dual service. The locomotive entered service in 1942, and retired in 1949 after accumulating a relatively low 165,000 service miles.

Q1型蒸汽机车高度不寻常且引起争议的设计，代表了英国“六轮”式货运蒸汽机车的终极发展。 该型机车的绰号包括“丑小鸭”、“咖啡壶”、“查理”、“饼干罐”、“饼干桶”、“钟表厂”和“弗兰肯斯坦”等。

Between 1942 and 1945, Thompson would rebuild thirteen of these Q4 s as tank engines for use as heavy shunters. The rebuilds were given the classification of Q1, which had been made vacant by the withdrawal of the last Ivatt Q1 in 1934.

The Southern Railway Class Q1 is a type of steam locomotive, and represents the ultimate development of the British 0-6-0 freight engine. In late 1939 the Southern Railway, until then primarily a high-density commuter railway serving London and South-East England, suddenly found itself on the British frontlines of the Second World War.