Thomson Sandilands & MacLeod originated as Thomson & Sandilands. an architectural partnership formed in Glasgow, Scotland in 1886 by John Thomson (1859-1933) and Robert Douglas Sandilands (1854-1913). The partnership was formally dissolved in April 1914. It was re-formed later that year as Thomson Sandilands & MacLeod with Alexander Hood Macleod (1889-1941) as a third partner. Sandilands' name was retained in the title even though he had died a year before it was established.
In the years up to World War One Thomson & Sandilands worked on a wide variety of commissions, particularly church work and for private clients. Following the war as Thomson Sandilands & MacLeod they secured a range of industrial commissions, including a number of warehouses in Glasgow.
Thomson, Sandilands & MacLeod continued until the 1950s with the name unchanged well after the death of all three partners.
See Dictionary of Scottish Architects 1720-1980 for a chronological list of architectural work by Thomson, Sandilands & MacLeod from 1915 to 1941. See also Historic Environment Scotland [links below]