The Slough Trading Estate founded in Slough in the south of Buckinghamshire in 1920, was an early business park in the United Kingdom. According to the estate's owners and operators, SEGRO (formerly Slough Estates plc), Slough Trading Estate consists of 486 acres (1.97 km2) of commercial property in Slough and provides 7,500,000 sq ft (700,000 m2) of accommodation to 500 businesses and has a working population of about 20,000 people.