Brentford Dock in Brentford, west London, was a major trans-shipment point between the Great Western Railway (GWR) and barges on the River Thames. The building of Brentford Dock was started in 1855 and it was formally opened in 1859. The former dock yard was redeveloped in 1972 and is now Brentford Dock Marina and Brentford Dock Estate.