Thomas Waller Marwick was born in Jersey, Channel Islands in c.1903 and was articled to his father, Thomas Craigie Marwick (1878-1965), at the family practice, Thomas P. Marwick & Son, in Edinburgh. In 1928, after making a study tour of the USA and Canada he attended the Architectural Association Schools in London. He was awarded his A.A. Diploma in 1931 and later that year was elected an Associate of the Royal Institute of British Architects (ARIBA). After completing the course at the A.A., he returned to his father's practice and in 1935 was made a partner in the firm. Thomas Waller Marwick played as significant role in the design of the pavilions and other buildings which Thomas P. Marwick & Son were commissioned to build for the Empire Exhibition held in Glasgow in 1937.
Thomas P. Marwick & Son ceased to practice in the early 1940s and during World War Two, T. W. Marwick served in the Army. Following the war he established an independent architectural practice in Edinburgh, subsequently known as T. Waller & Associates. His later work consisted mainly of alterations and additions to existing buildings in Edinburgh. He died in Morningside, Edinburgh on 15 July 1971
For a list of architectural projects by Thomas Waller Marwick see Dictionary of Scottish Architects 1660-1980