4B/C is located on the well established Swallowfield Way Industrial Estate just off Dawley Road in Hayes. Heathrow Airport is within 3 miles to the south of the estate and nearby Dawley Road (A437) gives good access to Junction 3 of the M4, which is within 2 miles to the west. The A40 is 5 miles to the north and has direct access to M40 and M25. Hayes Town Centre is within walking distance to the west and Hayes & Harlington Railway Station provides regular trains to and from London Paddington and is a Crossrail station.