Diploma plc is a British business supplying specialised technical products and services based in London, England. It is a constituent of the FTSE 100 Index.
History
The company was founded in 1931. It was first listed on the London Stock Exchange in 1960, and was a market leader in electronic component distribution, building products and special steels until the late 1980s.[2]
The electronic component distribution business (SEI Macro) was sold in 1999,[3] the building products business (Robert Lee) was sold in 2000,[4] and the special steels business (Henry Whitham) was sold in 2001.[5]