Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 133,108 pages of information and 210,773 images on early companies, their products and the people who designed and built them.
1889 Laing, Wharton and Down announced that the part of their business related to the Thomson-Houston electric lighting system had been formed into a limited company Laing, Wharton and Down Construction Syndicate Ltd
1890 Laing, Wharton and Down Construction Syndicate Ltd made a proposal for lighting a section of the City which was on the same terms as proposed by Brush Electrical Engineering Co so it was recommended that they should be given a contract for the eastern part of the City.
1891 Board of Trade approved the transfer of the provisional orders given to Laing, Wharton and Down Construction Syndicate Ltd and Brush Electrical Engineering Co to City of London Electric Lighting Co Ltd which later become the subject of a libel case.
1892 Crystal Palace Electrical Exhibition. Primary meter for alternating current at central stations. 
1894 Purchased all the patents, rights and privileges of the Thomson-Houston system of electric lighting, traction and power transmission in the U.K. Would manufacture in England. The Thomson-Houston company, "took an interest" in the new company, which changed its name to British Thomson-Houston Co (BTH) Ltd.