This, though, will not be entirely unusual -- for such staunch British PMs as Winston Churchill and Harold Macmillan happened to be half-American (on their mothers' side) and Johnson himself was born in the US, becoming the first non-UK-born Prime Minister since Andrew Bonar Law nearly a century ago (Bonar Law, however, was born in Canada, which was a part of the Empire.)

Born in Southampton on May 12, 1980, Sunak is the son of (the then British) Kenya-born Yashvir Sunak and his wife, Tanganyika-born Usha, whose grandparents were born in the Punjab Province of British India, and migrated to East Africa, and from there to the UK in the 1960s.

"My parents emigrated here, so you've got this generation of people who were born here, their parents were not born here, and they've come to this country to make a life," he said in an interview with the BBC in 2019.

"In terms of cultural upbringing, I'd be at the temple at the weekend -- I'm a Hindu -- but I'd also be at (Southampton Football Club) the Saints game as well on a Saturday -- you do everything, you do both," he said, also revealing that he was fortunate not to have endured a lot of racism growing up, save for one incident, when he was with his younger siblings.

With his father a general practitioner, and his mother, a pharmacist, he had an easy childhood. He studied at a prep school in Hampshire, and then he was at the prestigious Winchester College, where he was head boy and editor of the school paper; during vacations, he worked at a local curry restaurant.