David Ernest Lloyd Davies (sometimes Lloyd-Davies), a British civil engineer, studied at the University of Birmingham and during 1893-1896 completed an apprenticeship under the borough engineer of Wolverhampton, near Birmingham. For the next five years he worked on large sewerage and water schemes as assistant to a civil engineer at Wolverhampton. In 1901 he was appointed as chief assistant engineer to the corporation of Birmingham and while there wrote a paper (with A.S. Jones and W.O. Travis) on 'The elimination of storm water from sewerage systems'. The paper was published by the Institution of Civil Engineers in 1906. That same year Lloyd Davies became chief engineer of Alexandria, Egypt, and in 1914 was appointed as the first city engineer of greater Cape Town. He held this post until 1931, when he resigned as a result of poor health.
His main works while in Cape Town included his contribution, as a member of the city's Board of Engineers, to the construction of the Steenbras water works and other schemes to augment the water supply of Cape Town (with W.A. Tait, T. Stewart* and F.E. Kanthack*). Another major project was described in his Report on the main drainage of the southern suburbs (1915, with additions in 1918). He also wrote a pamphlet on 'The road transport problem in South Africa' (1924). A paper by him on 'The works for the augmentation of the supply of water to the city of Cape Town, South Africa' was published in the Minutes of Proceedings of the Institution of Civil Engineers (1934, Vol. 234, pp. 1931-1932) after his death.
Lloyd Davies was elected an associate member of the (British) Institution of Civil Engineers in April 1901 and became a full member in January 1909. From 1927 to 1930 he served as a member of the institution's council resident in South Africa.