Tizard was born in Gillingham, Kent in 1885, the only son of Thomas Henry Tizard, naval officer and hydrographer, and his wife, Mary Elizabeth Churchward. His ambition to join the navy was thwarted by poor eyesight, and he instead studied at Westminster School and Magdalen College, Oxford, where he concentrated on mathematics and chemistry, doing work on indicators and the motions of ions in gases. Tizard graduated in 1908 and at his tutor's suggestion he spent time in Berlin, where he met and formed a close friendship with Frederick Alexander Lindemann, later an influential scientific advisor of Winston Churchill. In 1909, he became a researcher in the Davy–Faraday Laboratory of the Royal Institution, working on colour change indicators. In 1911, Tizard returned to Oxford as a tutorial fellow at Oriel College and to work as a demonstrator in the electrical laboratory. Tizard was married on 24 April 1915 to Kathleen Eleanor, daughter of Arthur Prangley Wilson, a mining engineer. They had three sons: Sir Peter Mills Tizard, who became a professor of paediatrics at the University of London and Regius Professor of Physic at Oxford ; Richard Henry Tizard, an engineer and senior tutor at Churchill College, Cambridge; and David, a general practitioner in London.
"The secret of science", he once said, "is to ask the right question, and it is the choice of problem more than anything else that marks the man of genius in the scientific world." Tizard's chosen problem became aeronautics. At the outbreak of World War I he was commissioned as a second lieutenant into the Royal Garrison Artillery on 17 October 1914 and then later transferred to the Royal Flying Corps, where he became experimental equipment officer and learned to fly planes after his eyesight improved. He acted as his own test pilot for making aerodynamic observations. When his superior Bertram Hopkinson was moved to the Ministry of Munitions, Tizard went with him. When Hopkinson died in 1918, Tizard took over his post. Tizard served in the Royal Air Force from 1918 to 1919, ending the war at the rank of lieutenant colonel. After the end of the war he was made Reader in Chemical Thermodynamics at Oxford University, where he experimented in the composition of fuel trying to find compounds which were resistant to freezing and less volatile, devising the concept of "toluene numbers" – now referred to as octane ratings. After this work he took up again a government post in 1920 as Assistant Secretary to the Department of Scientific and Industrial Research. His successes in this post included the establishment of the post of the Chemical Research Laboratory in Teddington, the appointment of Harry Wimperis as Director of Scientific Research to the Air Force and finally the decision to leave to become the President and Rector of Imperial College London in 1929, a position he held until 1942. In 1935 the development of radar in the United Kingdom was started by Tizard's Aeronautical Research Committee , doing the first experimental work at Orfordness near Ipswich before moving to the nearby Bawdsey Research Station in 1936. In 1938 Tizard persuaded Mark Oliphant, at Birmingham University, to drop some of his nuclear research and concentrate on development of an improved source of short-wave radiation. This led to the invention by John Turton Randall and Harry Boot of the cavity magnetron, a major advance in radar technology, which in turn provided the basis for airborne interceptors using radar.
World War II
In September 1940 after a top secret landmark conference with Winston Churchill at which his opposition to R.V. Jones' view that the Germans had established a system of radio-beam bombing aids over the UK had been overruled, Tizard led what became known as the Tizard Mission to the United States, which introduced to the US, among others, the newly invented resonant-cavity magnetron and other British radar developments, the Whittle gas turbine, and the British Tube Alloys project.
The Ministry of Defence’s UFO Project has its roots in a study commissioned in 1950 by the MOD’s then Chief Scientific Adviser, the great radar scientist Sir Henry Tizard. As a result of his insistence that UFO sightings should not be dismissed without some form of proper scientific study, the department set up arguably the most marvellously-named committee in the history of the civil service, the Flying Saucer Working Party.
Tizard had followed the official debate about ghost rockets with interest and was intrigued by the increasing media coverage of UFO sightings in the United Kingdom, America and other parts of the world. Using his authority as Chief Scientific Adviser at the MOD he decided that the subject should not be dismissed without proper, official investigation. Accordingly, he agreed that a small Directorate of Scientific Intelligence/Joint Technical Intelligence Committee working party should be set up to investigate the phenomenon. This was dubbed the Flying Saucer Working Party. The DSI/JTIC minutes recording this historic development read as follows: After discussion it was agreed that the members of the Working Party should be representatives from DSI1, ADNI, MI10 and ADI. It was also agreed that it would probably be necessary at some time to consult the Meteorological Department and ORS Fighter Command but that these two bodies should not at present be asked to nominate representatives. One of the most controversial meetings Tizard had to attend in his capacity as chair of the Defence Research Policy Committee would only emerge many years later with the declassification of CIA documents, namely a meeting on 1 June 1951 at the Ritz-Carlton Hotel in Montreal, Quebec, Canada, between Tizard, Omond Solandt and representatives of the CIA, to discuss "brainwashing".
