When Rolls - Royce closed their locomotive business , THR took their place in the market place with similar but improved locomotives .
After building ' specials ' and rebuilding existing locomotives , THR started building their own locomotives .
When Rolls - Royce closed THR 's locomotive business , THR took their place in the market place with similar but improved locomotives .
After building ' specials ' and rebuilding existing locomotives , THR started building their own locomotives .