During the pre-grouping era, from 1899 to 1923, Wilson Worsdell of the North Eastern Railway (NER) used the type for his express passenger locomotives, the S and S1 classes of 1899 and 1900 that became the B13 and B14 classes of the London and North Eastern Railway (LNER) in 1923.
Soon afterwards, these were followed by the appearance of other designs.

John G. Robinson of the Great Central Railway (GCR) designed the Class 8 Fish Engines of 1902.

In 1902 and 1903, George Jackson Churchward produced the 2900 Saint Class, which was the first in a long line of 4-6-0 classes operated by the Great Western Railway (GWR).

In 1903, Francis Webb of the London and North Western Railway (LNWR) followed with his unsuccessful four-cylinder compound locomotives of the 1400 Bill Bailey class.

Between 1905 and 1910, altogether 105 locomotives of George Whale’s Experiment Class were built for the LNWR.

Two notable 4-6-0 express passenger designs appeared in 1906.
One was the Caledonian Railway’s Cardean Class which was, at the time, the most powerful locomotive in Britain.
The other was Churchward's four-cylinder GWR Star Class, which was developed and enlarged by Charles Collett as the GWR 4073 Castle class in 1923 and later also as the GWR 6000 King class in 1927.

Other significant early express 4-6-0 designs included:
The LNWR's Prince of Wales Class, with 246 locomotives built between 1911 and 1921.

The LNWR's Claughton Class, with 130 locomotives built between 1913 and 1924.

The Class S69 of the Great Eastern Railway (GER), with 81 locomotives produced between 1912 and 1928.

Robert Urie of the London and South Western Railway (LSWR) introduced three successful classes, the H15 class mixed traffic locomotives, introduced in 1914 and built until 1924, the N15 King Arthur class, with 74 locomotives built between 1919 and 1926, and the S15 class, with 45 locomotives built between 1920 and 1936.

In 1907, Wilson Worsdell of the NER built ten W class 4-6-0T tank locomotives.
These were all rebuilt to NER Class W1 4-6-2T Pacific between 1914 and 1917.
During the pre-grouping era, from 1899 to 1923, Wilson Worsdell of the North Eastern Railway (NER) used the type for his express passenger locomotives, the S and S1 classes of 1899 and 1900 that became the B13 and B14 classes of the London and North Eastern Railway (LNER) in 1923. Soon afterwards, these were followed by the appearance of other designs.
John G. Robinson of the Great Central Railway (GCR) designed the Class 8 Fish Engines of 1902.
In 1902 and 1903, George Jackson Churchward produced the 2900 Saint Class, which was the first in a long line of 4-6-0 classes operated by the Great Western Railway (GWR).
In 1903, Francis Webb of the London and North Western Railway (LNWR) followed with his unsuccessful four-cylinder compound locomotives of the 1400 Bill Bailey class.
Between 1905 and 1910, altogether 105 locomotives of George Whale’s Experiment Class were built for the LNWR.
Two notable 4-6-0 express passenger designs appeared in 1906. One was the Caledonian Railway’s Cardean Class which was, at the time, the most powerful locomotive in Britain. The other was Churchward's four-cylinder GWR Star Class, which was developed and enlarged by Charles Collett as the GWR 4073 Castle class in 1923 and later also as the GWR 6000 King class in 1927.
Other significant early express 4-6-0 designs included:
The LNWR's Prince of Wales Class, with 246 locomotives built between 1911 and 1921.
The LNWR's Claughton Class, with 130 locomotives built between 1913 and 1924.
The Class S69 of the Great Eastern Railway (GER), with 81 locomotives produced between 1912 and 1928.
Robert Urie of the London and South Western Railway (LSWR) introduced three successful classes, the H15 class mixed traffic locomotives, introduced in 1914 and built until 1924, the N15 King Arthur class, with 74 locomotives built between 1919 and 1926, and the S15 class, with 45 locomotives built between 1920 and 1936.
In 1907, Wilson Worsdell of the NER built ten W class 4-6-0T tank locomotives. These were all rebuilt to NER Class W1 4-6-2T Pacific between 1914 and 1917.
4-6-0