The family were major ship-owners who had diversified into sugar refining, and Leonard joined the firm in 1903, and became a director when his father retired in 1909.
The campaign was fronted by a cartoon character, "Mr Cube", drawn by artist Bobby St John Cooper.
[3] Lyle was a notable athlete who represented Great Britain at lawn tennis, competing the Men's singles at the Wimbledon Championships in 1922, 1923, and 1924.
He did not stand again until 1940, when he was elected as MP for Bournemouth at an unopposed by-election, and held the seat until he was ennobled in October 1945 in Churchill's resignation honours list, having stood aside to make way for Brendan Bracken.
[2] He was knighted in the King's Birthday Honours 1923,[4] made a baronet on 22 June 1932,[5][6] and was ennobled on 13 September 1945 as Baron Lyle of Westbourne, of Canford Cliffs in the County of Dorset.