These were started half a year ago and I wasn't able to finish them until December, the customer asking for some mid 50s GCR prototypes;
The first are around 12 N5s, these were the staple shunting, trip, and generalist tank engines of the MSLR/GCR, the company finding that with them they had no use for a standard 0-6-0 like most companies, any the GCR had as a result were either Lancashire Derbyshire and East Coast Railway in origin or were an inherited hodge podge of industrial types!
The N5s were a long lasting type, similarly to other small mass produced 6 and 4 coupled types of it's era they didn't fully disappear until the early 1960s.
Latterly we have the class L1 (later L3 after Thompson's own 2-6-4 tanks were introduced); these were the only GCR development of a LD&ECR engine, these being the M1 0-6-4Ts. The former companies lines were in need of specialist motive power to supplement LD&ECR designs and the handful of Robinson 8 coupled types, and with much influence from former LD&ECR CME Robert Thom, the result was an enlarged version of the 0-6-4s, and what became the first 2-6-4T in Great Britain.
The engines were certainly powerful, but first appeared as the First World War broke out and suddenly the traffic they were built for became stifled, from that point on this odd class found it difficult to find work, their fuel capacity negating them from any long distance trains; this was a somewhat similar set of circumstances that led to the Gresley P1s early withdrawals.
2 L1/L3s have been made, these being the last 2 survivors of the class, the type becoming extinct by 1956 (an early casualty for a Robinson freight engine), they survived to the end of their days on services like pick up goods trains.
I'm hopeful that in the future I'll be able to produce these both in LNER and GCR liveries (with the appropriate fittings), but for the moment there are just the BR examples.