David Cameron will forever be remembered as the prime minister who took Britain out of the European Union, according to the Daily Mail's political editor.
Isabel Oakeshott, who also wrote an unauthorised biography of the prime minister, told Good Morning Britain that Cameron "could live" with Brexit but would be "devastated" if it sparked Scotland gaining independence and the break up of the European Union.
"I think David Cameron will like to be remembered for his pledge on international development. I think he's extremely proud of that, I think he's also extremely proud of his legacy on gay marriage.
"But you know what we can waffle on for hours about those things and they are important, but at the end of the day he will be remembered for taking Britain out of the EU."
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Theresa May kept her first speech as prime minister short and to the point, as she vowed to lead a "better Britain" outside the EU.