GCR Classes 8D and 8E were two pairs of three-cylinder compound steam locomotives of the 4-4-2 wheel arrangement built in 1905 and 1906 for the Great Central Railway.

In 1903, the Great Central Railway (GCR) had given comparative trials to two pairs of two-cylinder express passenger steam locomotives designed by their Chief Mechanical Engineer, John G. Robinson.

[2] Whilst these were under construction, it was decided to compare the merits of these locomotives against a three-cylinder compound of similar size.

On the MR engines, all three cylinders drove the same axle, but the GCR engines were designed so that the high-pressure cylinder drove the front coupled axle as on the MR engines, whereas the low-pressure cylinders drove the rear coupled axle; the first use of this arrangement in Britain.

[7] No more 4-4-2s were built for the GCR, of any of these classes, although in 1908, Robinson did consider ordering more compounds: but the introduction of superheating soon provided a simpler method of reducing coal consumption.

In 1932/33 they moved to Immingham, where they were mainly used on services between Cleethorpes and Doncaster, Sheffield Victoria or Retford.

364 was named by March 1907 after the wife of the GCR Chairman, Sir Alexander Henderson; no.