The Great Western Railway 4900 Class or Hall Class is a class of 4-6-0 mixed-traffic steam locomotives designed by Charles Collett for the Great Western Railway. A total of 259 were built at Swindon Works, numbered 4900–4999, 5900–5999 and 6900–6958. The LMS Stanier Class 5 4-6-0 and LNER Thompson Class B1 both drew heavily on design features of the Hall Class. After nationalisation in 1948, British Railways gave them the power classification 5MT.
A 4900 Class at Didcot
Image: GWR 4920 Dumbleton Hall at Buckfastleigh
Image: GWR 4900 Class 4930 Hagley Hall
Image: Kinlet Hall (8130668488)
Charles Benjamin Collett was Chief Mechanical Engineer of the Great Western Railway from 1922 to 1941. He designed the GWR's 4-6-0 Castle and King Class express passenger locomotives.
Charles Collett
GWR Castle class 4073 Caerphilly Castle
GWR King class 6024 King Edward I
GWR 5600 class no. 6697