Thompson, Ritchie and Co
of Winchester House, Old Broad-street, London, Electrical and General Engineers.
c.1883 Thomas Thompson was outside manager for 6 months
1884 Robert Ord Ritchie became a partner
Sometime after 1883 Robert Thorburn Turnbull became a partner
1889 Dissolution of the Partnership between Alfred Thompson (ed: guess this is the particular person), Robert Ord Ritchie, and Robert Thorburn Turnbull, carrying on business as Thompson, Ritchie, and Co., at Winchester House, Old Broad-street, in the city of London, Electrical and General Engineers, so far as regards Robert Ord Ritchie.[1]
1889 Dissolution of the Partnership between Alfred Thompson and Robert Thorburn Turnbull, carrying on business as Thompson, Ritchie, and Co., at Connaught-Mansions, Victoria-street, in the city of Westminster, Electrical and General Engineers; the business carried on by Robert Thorburn Turnbull[2]
1935 Was in voluntary liquidation[3]