|Type||Independent preparatory school|
|Founder||Reverend John Hawtrey|
|Location||Slough, later Westgate-on-Sea, then Oswestry, and lastly Savernake Forest, Wiltshire
|Merged with||Cheam School|
|Website||Cheam School site|
Hawtreys Preparatory School was an independent boys' preparatory school, first established in Slough, later moved to Westgate-on-Sea, then to Oswestry, and finally to a country house near Great Bedwyn, Wiltshire. In its early years it was known as St Michael's School.
The school was founded in 1869 by the Reverend John Hawtrey. He had been a boy at Eton, from the age of eight. In later life he became a master at Eton and was offered his own house of boys. He decided to remove all of the younger boys from the school. With the permission of Eton College, he took the lowest two forms out to a separate school in Slough and housed them in what is now St Bernard's Catholic Grammar School, Slough. This was known as St Michael's School, and was opened on 29 September 1869, (St Michael's day).
John Hawtrey's son, Edward, removed the school to Westgate-on-Sea early in 1883. When Edward Hawtrey died, the name of the school was changed to Hawtreys.
The school buildings were requisitioned during the Second World War and the school moved to Oswestry, to the home of Sir William Wynn-Williams. In 1946 it moved to Tottenham House, a large Palladian country house near the village of Great Bedwyn, Wiltshire, in the heart of the Savernake Forest. Throughout the history of the school, a close connection was maintained with Eton College to which many boys moved at the age of thirteen.
- Field Marshal Lord Alexander (1891–1969)
- Sir Euan Anstruther-Gough-Calthorpe, 3rd Baronet (born 1966), property manager
- Stanley Baldwin, 1st Earl Baldwin of Bewdley KG (1867–1947), British prime minister
- George Barclay (RAF officer), Battle of Britain pilot
- Johnny Boden, shirt-manufacturer
- Kim Brassey (born 1955), racehorse trainer
- David Brudenell-Bruce, Earl of Cardigan (born 1952) owner of Tottenham House 
- Detmar Blow (1867–1939), architect
- Henry Cookson Guinness Book of Records as member of first team to reach the Antarctic Pole of inaccessibility Pole of inaccessibility in 2007
- Roderick Forman (born 1936), crossword setter (Radix)
- Robert St Leger Fowler (1891–1925), cricketer
- Zac Goldsmith (born 1975), Conservative politician, environmentalist and editor of The Ecologist
- Thomas Lange, hotelier, philanthropist, & author
- Roddy Llewellyn, partner of Princess Margaret and horticulturalist
- Oliver Messel (1904–1978), artist and stage designer
- Sir Anthony Rupert Milburn, 5th Baronet (born 1947), landowner
- Sir Peter O'Sullevan (born 1918), BBC racing commentator
- John Seymour, 19th Duke of Somerset (born 1952)
- Henry Somerset, Marquess of Worcester (born 1952)
- p 94, The History of Slough, Maxwell Fraser, Slough Corporation, 1973
- The Independent website 10 July 1994 (accessed on 15 October 2011)
- ANSTRUTHER-GOUGH-CALTHORPE, Sir Euan (Hamilton), 3rd Bt cr 1929 in Who's Who online at xreferplus.com (accessed 28 November 2007)
- The Independent, 10 July 1994, | Transfer fees wheeze cuts old school ties (accessed 7 May 2010)
- MILBURN, Sir Anthony (Rupert), 5th Bt cr 1905 in Who's Who online at xreferplus.com (accessed 28 November 2007)