of 53 Victoria Street, Westminster, London, SW
1876 Company established by John Jackson.
1898 Incorporated as a limited company Sir John Jackson Ltd
1914 Engineers and contractors for public works.
Some of the principal works carried out by this firm were:
- the substructure of the Tower Bridge,
- the extension of the Admiralty breakwater at Dover,
- the commercial harbour at Dover,
- the last eight miles of the Manchester Ship Canal,
- the deep water lock at Barry, near Cardiff,
- the commercial graving docks at Barry,
- the extension of Swansea Docks,
- the dockyard at Keyham, Devonport, for the British Admiralty,
- the harbour at Simonstown, South Africa,
- the north breakwater at the mouth of the River Tyne for the British Admiralty,
- the new harbour at Singapore for the British Government,
- the graving dock and improvement of the Arsenal at Ferrol for the Spanish Governemnt,
- the Arica-La Paz Railway over the Andes from Arica on the coast of Chile to La Paz, Bolivia (rising to an altitude of 14,500 ft.),
- the dam across the Euphrates,
- the irrigation works in Mesopotamia for the Turkish Government,
- the breakwater at Victoria, British Columbia. 
1926 Incorporated with The British Construction Company, the business of Percy Westacott.
Later became a subsidiary of the Bernard Sunley Investment Trust, providing civil engineering
Sources of Information