Thomas Braddock was born in Kennington, London, England on 31 August 1886 . He trained as an architect at the Architectural Association Schools in London and at the London County Council School of Building. He appears to have begun his career as a decorative designer and gave as his occupation as "Draughtsman in Decorative Metal Work Stained and Leaded Glass and Metal Windows" in the 1911 England and Wales Census.
Braddock was elected a Licentiate of the Royal Institute of British Architects (LRIBA) in 1932. In the mid-1930s he was in partnership with Alfred Sidney Morris. He received the RIBA Grissell Gold Medal in 1912. He was also awarded the Architectural Association Silver and Bronze Medals and the National Bronze Medal.
His address was given as 74 Haydon Park Road, Wimbledon, Surrey [now London] in 1901; 20 Pembroke Terrace, London Road, Spring Grove, Isleworth, Middlesex in 1911; 8, The Ridgeway, Wimbledon, Surrey in 1923; 1, Lansdowne Road, Wimbledon, Surrey in 1926; 18 Homefield Road, Wimbledon, Surrey in 1933 and 1936; and Chamberhouse Mill, Thatcham, Near Newbury, Berkshire in 1939. He died in East Preston, Sussex on 8 December 1976
Dorking War Memorial, 1921; Dundee War Memorial, 1925; vicarages for Churches of St. Andrew and St. Luke, Wimbledon. [Who's Who in Architecture 1926]
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