Hornby R30402 Gwr Castle Class Lockheed Hudson 5081 Loco Steam Scale 1:76 Gauge. Designed as front-line express passenger locomotives, the GWR’4073′ Class’Castles’ were built over a long period. The first of 155 new locomotives entered traffic in August 1923, while the last was finished at Swindon in August 1950 under British Railways. Sixteen further locomotives – 15’Stars’ and one-off’Pacific’ No. 111 Great Bear – were also rebuilt as’Castles’, making 171 in total. 5081 was built in 1939 and originally named’Penrice Castle’ but was renamed’Lockheed Hudson’ in 1941. It was withdrawn from Cardiff East Dock in October 1963. Item Length – Without Packaging (cm). Item Height – Without Packaging (cm). Item Width – Without Packaging (cm). View all related items. Other great Hornby Hobbies brands.