 In 1955 Caledonia acquired the Cayzer family's interest in the "British & Commonwealth Shipping Co. Ltd", formed out of the merger of "Clan Line" (started by the Cayzer family in 1881) and "Union-Castle Line".In 1960 the company was listed on the London Stock Exchange and in 1981 their name was changed to Caledonia Investments PLC.After their holding in British & Commonwealth was sold in 1987, Caledonia Investments became a diversified trading and investment company, which in turn was converted into a UK Investment trust company on 1 April 2003.