Gordon Wallet Jackson was born in 1885 [probably in Scotland]. By 1910 he had moved to Bournemouth, Hampshire [now Dorset] and was articled to James Austen Laird (1880-1939) of J. W. Laird & J. Laird in Glasgow. He also attended Glasgow School of Art.
By 1910 he had moved to Bournemouth in Hampshire [now Dorset] where he was employed as an assistant in the architectural department of estate agency firm Fox Sons.
During World War One he served in the Gordon Highlanders from 1915 to 1918. Following the war he commenced practice as an architect in Bournemouth and in 1922 formed a partnership with Wallace Austin Greenen (1885-1938) as Jackson & Greenen. Edmonsham House, an apartment block in Orchard Street, Bournemouth designed by Jackson & Greenen in 1935 is described in Flats: Municipal and Private Enterprise (London: Ascot Gas Water Heaters Ltd., 1938 pp. 222-225). Jackson later formed the architectural practice Gordon W. Jackson & Partners. The practice designed the Boulevard United Reformed Church in Weston-super-Mare, Somerset in 1959.
Jackson was a Member of the Society of Architects (MSA). He was admitted an Associate of the Royal Institute of British Architects (ARIBA) in 1925 and was elected a Fellow of the Royal Institute of British Architects FRIBA) in 1930. His name does not appear in the RIBA Kalendar after the 1933-34 edition
His address was given as 84 Stanmore Road, Cathcart, Lanarkshire, Scotland in 1901; Seaton, Talbot Hill, Bournemouth. 1923; 5. Yelverton Road, Bournemouth. 1926; and 5 and 7 Yelverton Road, Bournemouth in 1930 and 1933. He died in Poole, Dorset in 1965
Directory of British Architects 1834-1914. Compiled by Antonia Brodie, et al. Volume 1: A-K. London; New York: British Architectural Library, Royal Institute of British Architects/Continuum, 2001
‘Obituary’. The Builder vol. 208 14 May 1965 p. 170