Mackeson was the son of Henry Mackeson and Ella Cecil Ripley. He served in the Royal Scots Greys regiment of the British Army and achieved the rank of Brigadier. In 1945 he was elected to the House of Commons for Hythe, a seat he held until 1950 when the constituency was abolished, and then represented Folkestone and Hythe until 1959. Mackeson served under Winston Churchill as a Lord of the Treasury from 1951 to 1952 and as Secretary for Overseas Trade from 1952 to 1953. In 1954 he was created a Baronet, of Hythe in the County of Kent.
Mackeson married Alethea Cecil Chetwynd-Talbot, daughter of Reginald George Chetwynd-Talbot, in 1940. He died in January 1964, aged 58, and was succeeded in the baronetcy by his son Rupert.
|This article does not cite any sources. (February 2013) (Learn how and when to remove this template message)|
- Kidd, Charles, Williamson, David (editors). Debrett's Peerage and Baronetage (1990 edition). New York: St Martin's Press, 1990,[page needed]
- Hansard 1803–2005: contributions in Parliament by Sir Harry Mackeson
|Parliament of the United Kingdom|
|Member of Parliament for Hythe
1945 – 1950
|New constituency||Member of Parliament for Folkestone & Hythe
1950 – 1959
Sir Albert Costain
|Secretary for Overseas Trade
1952 – 1953
|Baronetage of the United Kingdom|
1954 – 1964