Input (grade 12): HS4000, named Kestrel, was a prototype high-powered mainline diesel locomotive built in 1968 by Brush Traction, Loughborough to demonstrate its wares to British Railways.
Output (grade 11): HS4000, named Kestrel, was a prototype high-powered mainline diesel locomotive built in 1968 by Brush Traction to demonstrate its wares to British Railways.