Background
The eldest son of the Review and Honorary Robert Grimston, Canon of Street Albans, and grandson of James Grimston, 2nd Earl of Verulam, Grimston was educated at Repton School, the City and Guilds Engineering College, and the University of London.
Career
During World War I, he was commissioned RGA (6th Howitzers) in 1916 and served in Thessaloniki and Palestine from 1916–1919. He served as a Junior Lord of the Treasury and Assistant Whip (unpaid) in 1937, Vice-Chamberlain of the Household from 1938–1939, Treasurer of the Household from 1939–1942. He then held junior ministerial office as Assistant Postmaster-General from 1942–1945 and as Parliamentary Secretary to the Ministry of Supply in 1945.
Grimston was created a Baronet on 11 March 1952 and was raised to the peerage being created Baron Grimston of Westbury, of Westbury in the County of Wiltshire on 11 December 1964.
Membership
36th United Kingdom Parliament. 37th United Kingdom Parliament. 38th United Kingdom Parliament.
39th United Kingdom Parliament.
40th United Kingdom Parliament. 41st United Kingdom Parliament.
42nd United Kingdom Parliament]
Grimston was elected as Conservative Member of Parliament (Member of Parliament) for Westbury, Wiltshire in 1931, holding the seat until 1964. He was later Deputy Chairman of Ways and Means from 1962–1964, and was a member of the United Kingdom Delegation to the General Assembly of the United Nations in 1960.