Brassey, Ogilvie and Harrison
Partnership of Thomas Brassey, Alexander Ogilvie and Henry Harrison
1861 The partners took the contract from the Metropolitan Board of Works for the Northern Mid-Level Main Sewer, from Kensal Green to Old Ford. This required, amongst other things, passing the sewer, 12 feet by 8 feet 6 inches, close under the Regent's Canal, and keeping the traffic open during the time, and carrying it in a 7-feet iron tube, more than 100 feet long, over the Metropolitan Railway, also making it in deep cuttings along narrow streets, and in 3 miles of tunnel under Oxford Street and other streets. The work was finished in 1866.
The same partners made the Loughton, Epping, and Ongar Railway, and the Bishop Stortford, Dunmow, and Braintree Railway; also the short line from Chertsey to Virginia Water.