Then, the former finance minister repeatedly described his predecessor's ideas as "fairytale" economics that would spook the markets.
He will also be the first person of colour to become Britain's prime minister.
"I grew up in the 80s and 90s, and I could not even imagine a non-white prime minister in my lifetime...
COVID CHAMPIONSunak rose swiftly up the ranks of the Conservative Party, becoming, in 2020, one of the youngest finance ministers.
When the COVID-19 pandemic hit Britain, Sunak dropped the Conservatives' small-state instincts to borrow massively and stave off the risk of an economic depression.