Boris Johnson will be the fifth prime minister since the Second World War to have been educated at Eton College.
The other four to attend the independent, fee-paying boarding school were David Cameron (prime minister from 2010-16), Alec Douglas-Home (1963-64), Harold Macmillan (1957-63) and Anthony Eden (1955-57).
Like Boris Johnson, all of them were Conservative prime ministers.
It means one third of the UK’s 15 prime ministers since 1945 are Old Etonians – the name given to former pupils of the college.

Three other post-war PMs attended independent schools: Clement Attlee (Haileybury), Winston Churchill (Harrow) and Tony Blair (Fettes).
The rest, including outgoing Prime Minister Theresa May, all attended grammar schools.
Eton College, near Windsor in Berkshire, has a history of producing prime ministers that stretches back to Robert Walpole in the early 18th century.
Walpole is widely regarded by historians as the first prime minister of Great Britain and the person who did most to shape the role into what we still recognise it to be today: the most important individual in the government.
Other Eton-educated PMs include William Pitt the Elder (prime minister from 1766-68); Arthur Wellesley, 1st Duke of Wellington (twice prime minister in the early 19th century); William Gladstone (four-time prime minister in the late 19th century); and Arthur Balfour (1902-05).
A reminder: this is our actual Prime Minister click here
Since you are here
Since you are here, we wanted to ask for your help.
Journalism in Britain is under threat. The government is becoming increasingly authoritarian and our media is run by a handful of billionaires, most of whom reside overseas and all of them have strong political allegiances and financial motivations.
Our mission is to hold the powerful to account. It is vital that free media is allowed to exist to expose hypocrisy, corruption, wrongdoing and abuse of power. But we can't do it without you.
If you can afford to contribute a small donation to the site it will help us to continue our work in the best interests of the public. We only ask you to donate what you can afford, with an option to cancel your subscription at any point.
To donate or subscribe to The London Economic, click here.
The TLE shop is also now open, with all profits going to supporting our work.
The shop can be found here.
You can also SUBSCRIBE TO OUR NEWSLETTER .