 The company was founded in 1903 by Edgar Purnell Hooley after he patented the road surfacing material tarmac in 1901.The company was formerly listed on the London Stock Exchange and was once a constituent of the FTSE 100 Index.In July 1999, Tarmac demerged its construction and professional services businesses under the name Carillion; the Tarmac building materials business was acquired by Anglo American later that year.