British Steel Corporation (BSC), formed in 1967 through the nationalisation of UK steel companies
British Steel plc, formed 1988 through the privatisation of British Steel Corporation
British Steel Ltd, formed 2016 from the sale of the long products division of Tata Steel Europe (former British Steel plc business) to Greybull Capital.
British Iron & Steel Corporation (Salvage) Ltd, commonly known as BISCO, a ship scrapper