The Eaton House Group of Schools is a group of private schools, all situated in London.^[1][2] It is composed of the Eaton House the Manor Nursery, Eaton House the Manor Pre-Preparatory, Eaton House the Manor Preparatory, Eaton House the Manor Girls' School, Eaton House Belgravia Pre-Preparatory, and Eaton House Belgravia Preparatory. The group became a limited liability company, with Sovereign Capital becoming the majority shareholder, when principal Hilary Harper retired and sold the company in 2016.^[3][4] The schools are non-selective at ages 3 and 4. In June 2021, Eaton House Schools became part of the Dukes Education group of schools.

The schools have a non-denominational Christian ethos,^[5] and a carol service at the local church is a regular occurrence every year.^[6] Places are allocated on a first-come first-served basis, sometimes with regard to those with previous family connections with the school.^[7] In one reported case in 2017, 160 students applied for around 30 places at the Manor at age 4.^[8]). The group is a member of the Independent Association of Prep Schools.^[9]

Thomas Sale Morton^[10] was born in 1867 and died on 21 January 1962, aged 95. Educated at Charterhouse School and Clare College, Cambridge, Morton was a private tutor and author of books on the classics (many of his works were used in schools as textbooks),^[10][11] and had previously taught at Summer Fields School. In 1897, Morton was encouraged to open a preparatory school by Helen (Nellie) Artie Tarleton Belles, the mother of Harold Macmillan, whom he was tutoring at the time.

The school was originally opened at 35 Cliveden Place, but it was moved many times in the Belgravia area, and in 1937 the current premises at Eaton Gate were purchased, and the school was renamed Eaton House School. During World War II, the pupils were evacuated to Haines Hill in Berkshire, where they boarded until the end of the war.^[12][13] Morton, a member of the Classical Association, abandoned the school soon after it was renamed,^[14] and moved to teach at The Hall School, Hampstead later in his career.

Following the departure of Morton, the school was then run by Robin T. Gladstone,^[15] identified to the pupils as a relative of William Ewart Gladstone.^[14] Gladstone then left the school to set up another school in East Grinstead.^[16] Due to Gladstone's ownership, the school was commonly known to students and parents as 'Mr Gladstone's day school'.^[14] In 1977, the school was renamed Eaton House Belgravia.

In 1998, Lucy Watts became headmistress of the school, retiring in July 2015. She was replaced by Annabel Abbott.^[17] In September 2017, Huw May became Headmaster of Eaton House Belgravia Pre-Prep School in Eaton Gate. It was announced in 2018 that the school would expand on the same site to take boys from 8-11 over the next three years.

In October 2013, a media controversy was triggered over the banning of nut consumption at breakfast for pupils at home, in addition to bans on consumption of certain foods in the school; however, no complaints appear to have been made to the school over the policy.^[18]

Eaton House Pre-Preparatory has taken part in Belgravia Christmas Sunday,^[19] and regularly takes part in the wreath-laying ceremony during the Annual Service of Remembrance at the Cenotaph on Armistice Day.^[20]

In 2008 refurbishment took place at the Manor, and a girls' school was built on the site in a new building on the compound, containing an underground gymnasium.^[22] Oliver Snowball is the headmaster.

Roosha Sue has served as headmistress of the Nursery since 2004, teaching in the Manor Pre-Prep before taking up this post.^[37]

• Harold Macmillan, 1st Earl of Stockton, Prime Minister of the United Kingdom from 1957 to 1963, also serving in various ministries before that and as a regular MP afterwards, and World War I veteran, was educated at Eaton Gate Preparatory School, which later became Eaton House Belgravia.^[10][38][39]
• Tony Benn, veteran Labour politician, serving as an MP and cabinet minister, Postmaster General, Chairman of the Labour Party, leadership challenger, president of Stop the War Coalition, and World War II veteran, was educated at Eaton Gate Preparatory School, which later became Eaton House Belgravia.^[14][16]
• Richard Norton, 8th Baron Grantley, a Conservative hereditary peer, councillor and candidate in 1983 (later switching his party allegiance and becoming the first UKIP peer in the House of Lords), was educated at Eaton House.^[40]
• Julian Amery, a Conservative MP, minister, patron of the Monday Club, life peer, journalist, World War II veteran, and son-in-law of Harold Macmillan, attended Eaton House.^[39]
• Adam Nicolson, author, attended Eaton House.
• Ronald Knox, priest, theologian, and author of detective stories, was educated at Eaton Gate Preparatory School, which later became Eaton House Belgravia.^[10]
• Archibald Wavell, 1st Earl Wavell, Field Marshall in the British Army, serving in World War I, the Second Boer War, and World War II, was educated at Eaton Gate Preparatory School, which later became Eaton House Belgravia.^[10]
• Anthony Asquith, film director and son of former Prime Minister of the United Kingdom H.H. Asquith, was educated at Eaton Gate Preparatory School, which later became Eaton House Belgravia.^[10] Asquith was also privately tutored by Morton at 10 Downing Street while his father was Prime Minister.
• Philip Pullman, author, attended Eaton House Belgravia.^[41]
• Christopher Hall, television producer, attended Eaton House Belgravia.^[42]
• Laurence Olivier, actor and president of the National Theatre, was educated at Eaton Gate Preparatory School, which later became Eaton House Belgravia.^[15]
• Bear Grylls, adventurer and TV presenter, attended Eaton House.^[43]
• Eddie Redmayne, actor and Oscar winner, attended Eaton House.^[44]
• Christopher O'Neill, financier and Swedish royal, attended Eaton House.^[45]
• Sheperd Paine, American historian and miniature modeller, attended Eaton House.^[46]

An official alumni society used to exist from at least 2007 to 2009 for old boys and girls of all ages; however, there is no mention of it on their current website or literature, and reasoning suggests that it may have been discontinued.^[47]

• George Mills, author of children's books, taught at Eaton Gate Preparatory School, which later became Eaton House Belgravia, from 1926 to 1938.^[48]
• Alastair Humphreys, adventurer and motivational speaker, worked as an SEN assistant at Eaton House The Manor Prep in the late 2000s.^[49]