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|Bishop Stortford, Dunmow, and Braintree Railway]]; also the short line from Chertsey to Virginia Water.