G'day Steve.
48624 is a Stanier 8F 2-8-0 built in 1943 and now based on the Great Central Railway.
https://www.gcrailway.co.uk/the-rail...otives/8624-2/
The 8Fs are heavy freight locomotives (class 8), designed by (Sir) William Stanier for the London Midland & Scottish Railway (LMS), but were also chosen as a wartime loco in WWII, before the War Department produced their own designs. As a result, this LMS design was produced by 'rival' companies during the war & 48624 is one of these, being built by the Southern Railway at Ashford in 1943.
Oh, and it was never anything other than black during it's working life - the red livery is a preservation flight of fancy, but it did revert to black later during it's period in traffic.
Tony