 The Company was founded by Sir Percival Perry and Sir Noel Mobbs in 1920 as "The Slough Trading Company Ltd" with the objective of acquiring and developing the site now occupied by the Slough Trading Estate in Slough.In 1926 the Company changed its name to "Slough Estates Ltd" and in 1931 it expanded north acquiring a site in Birmingham.In the 1980s it expanded rapidly buying "Allnatt Properties" and "Guildhall Properties" in 1984, "Helmlace" in 1985 and "Bredero Properties" in 1986.