Derek Colclough Walker-Smith, Baron Broxbourne, TD, PC, QC (13 April 1910 – 22 January 1992), known as Sir Derek Walker-Smith, Bt, from 1960 to 1983, was a British Conservative Party politician.
He joined the British Army and after the outbreak of World War II he attended the Staff College, Camberley, where Brian Horrocks was among his instructors.
[2] He was vice-chairman of the Inns of Court Conservative and Unionist Society and was made Queen's Counsel in 1955.
He held ministerial positions, including Economic Secretary to the Treasury (1956–57), at the Board of Trade (1955–56 and 1957), and Health (1957–59).
[3] The life barony became extinct on his death aged 81 in 1992 while he was succeeded in the hereditary baronetcy by his son Jonah.