5700 Class - L91 - London Transport Maroon HUO and the manufacturing output had

and the manufacturing output had doubled by 1957

Metal sprung buffers

Gearing arranged so locomotive can achieve a scale top speed of 120 mph (193 km/h)

auto off on movement

Pack D: Pontop & Jarrow Railway - Two ex-NER P1 style Chaldrons and an S&DR style Chaldron in pre-1932 lettering

5700 Class - L91 - London Transport Maroon HUO and the manufacturing output hadLondon Transports railway network is well known for being electrified and underground but there had always been a small fleet of steam locomotives retained for working infrastructure trains on the surface lines. By the 1950s, these older locomotives were well past their prime and London Transport began to look for replacements. Diesel locomotives were considered, as was a small fleet of ex GNR J52 steam locomotives but their trial was unsuccessful. In