So urgent was the need for new express locomotives upon his appointment as LBSCR Locomotive, Carriage C Wagon Superintendent that Douglas Marsh made arrangements with his previous employer, Henry Ivatt of the Great Northern Railway, to send a set of ‘C1’ 4-4-2 drawings to Kitsons of Leeds. The result were five ‘H1’ 4-4-2s of 1905. They weren’t exact copies of the GNR ‘C1s’ – they were a bit longer, had larger cylinders, a high-pressure boiler and screw reverser.
Marsh was taken ill in 1911 and, when faced with a need for more express locomotives, his assistant Lawson Billinton ordered more 4-4-2s. The six new locomotives, built at Brighton, became the ‘H2’. There were key detail differences, such as the shaped smokebox saddle and a running plate that didn’t undulate over…