William Henry Bailey was born in St Gluvias, Cornwall, England on 23 April 1866 and studied at Falmouth School of Art in Falmouth, Cornwall from 1883 to 1889. He gained experience working in the estate office of the Earl of Kimberley in Falmouth. In 1890 he moved to South Africa. He worked as an assistant to Edward Henry Surridge (1840-1907) in Ixopo in 1893-94 and to Francis Upton (1831-1907) in Pietermaritzburg in 1894-95. In 1895 he was was appointed assistant in the office of the Engineer-in-Chief, Natal Government Railways, a post he held until c.1907. During this period he was responsible for the design of a number of railway stations. He also lectured in Building Construction and allied subjects for the Pietermaritzburg Education Department from 1895 to 1908. Soon after leaving Natal Government Railways he established his own architectural practice in Pietermaritzburg. By 1910 Bailey had returned to England and was living in Weston-super-Mare, Somerset.
Bailey's address was given as 284 Loop Street, Pietermaritzburg, South Africa, and 3, Milton Avenue, Weston-super-Mare, Somerset in 1910; 4, Buffery Road, Dixon's Green, Dudley, Worcestershire in 1914; "Sunningdale,’’ Radlett, Hertfordshire in 1915; 159 Radnor Street, Hulme, Manchester; and 234 Liverpool Street, Salford, Lancashire in 1924. He died on 10 September 1933. His address at the time of his death was 9 Claremont Road, Redruth, Cornwall.
Several railway stations for the Natal Government Railways, 1900-07; railway institute at Ladysmlth, Natal, 1903-04; a number of factory extension buildings for the British Everite and Asbestilite Works, Ltd., at Bold, Widnes, Lancashire
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