Lennox-Boyd was elected as Member of Parliament for Mid Bedfordshire in 1931, and was admitted to Inner Temple, as a barrister in 1941. He was a member of Winston Churchill's peacetime government as Minister for Transport and Civil Aviation from 1952 to 1954. In this post he once memorably opined that road accidents were the result not of the taking of large risks, but of the taking of small risks very large numbers of times. As a Minister, he opened the third Woodhead Tunnel on the British Railways electrified railway across the Pennines on 3 June 1954. In 1954 he became Secretary of State for the Colonies, where he oversaw early stages of decolonisation, with the granting of independence to Cyprus, Ghana, Iraq, Malaya and Sudan. He was in office during the Mau Mau Rebellion in Kenya, and was persuaded to stay in office by Harold Macmillan after being censured for the Hola massacre. He talked openly about independence for the Federation of Malaya, and invited the then Chief Minister of Malaya, Tunku Abdul Rahman and his colleagues to Lancaster House to discuss the possibility of independence. Following the Suez Crisis of 1956, Lennox-Boyd appears to have made the initial approach to writer Ian Fleming about the possibility of Prime Minister Sir Anthony Eden's using Fleming's Jamaican house, Goldeneye, for a rest cure given the precarious state of Eden's health. Because of security considerations, he initially intimated to Fleming that he wanted Goldeneye for a holiday of his own and, when he resisted Fleming's suggestion that his and Fleming's wife liaise over the arrangements, Fleming at first assumed that he was planning an extra-marital assignation. After the 1959 general election, Lennox-Boyd was replaced as Colonial Secretary by Iain Macleod. In September 1960 he was raised to the peerage as Viscount Boyd of Merton of Merton-in-Penninghame in the County of Wigtown. This caused a by-election for his Mid Bedfordshire constituency which was won by Stephen Hastings. He was further honoured the same year when he was appointed a Companion of Honour. Being opposed to the line taken in Harold Macmillan's Wind of Change speech, he subsequently became an early patron of the Conservative Monday Club.
Other public positions and business career
Lord Boyd of Merton held the office of Deputy Lieutenant of Bedfordshire between 1954 and 1960 and Deputy Lieutenant of Cornwall in 1965. He was managing director of Arthur Guinness & Sons between 1959 and 1967, and was a Companion of Honour and Privy Councillor.
Mau Mau rebellion
In June 1957, Lennox-Boyd, who was Secretary of State for the Colonies, received a secret memorandum written by Eric Griffiths-Jones, the attorney general of Kenya. The letter described the abuse of Mau Mau detainees. The memorandum was passed on by Sir Evelyn Baring, the Governor of Kenya, who is alleged to have added a cover letter asserting that inflicting "violent shock" is the only way to deal with Mau Mau insurgents. In April 2011 a Guardian report described a cache of government documents which may indicate that, despite clear briefings, Lennox-Boyd repeatedly denied that the abuses were happening, and publicly denounced those colonial officials who came forward to complain.
Personal life
Lord Boyd married Lady Patricia Guinness, daughter of Rupert Guinness, 2nd Earl of Iveagh, on 29 December 1938. His mother-in-law, the Countess of Iveagh, had been an MP in 1927-35 and he was brother-in-law to Sir Henry Channon, also an MP, making them jointly a first mother-in-law and child-in-law set of MPs. They had three children:
Simon Lennox-Boyd, 2nd Viscount Boyd of Merton
Hon. Christopher Lennox-Boyd
Hon. Mark Lennox-Boyd
Lord Boyd was knocked down and killed by a car when walking across Fulham Road in London in March 1983, aged 78, and, after cremation, was buried at St Stephen's Church, Saltash, Cornwall. He was succeeded by his eldest son, Simon. Lady Boyd died in May 2001, aged 83. She gave her name to the Viscountess of Merton cup, awarded at the Cornwall Spring Flower Show. According to many sources Lennox-Boyd was a gay man. He is depicted in James Lees-Milne's diary of 1942-1943, Ancestral Voices, as being infatuated with the American aesthete Stuart Preston.