Park Royal is an area in northwest London, England. It is home to the largest business park in London, occupying about 500 hectares (1,200 acres). Park Royal Business Park is promoted commercially by the Park Royal Business Group (PRBG) which is part of West London Business. Park Royal occupies parts of the London Borough of Brent and the London Borough of Ealing.Park Royal business park contains over 1,200 businesses, employing an estimated 35,000 workers.