Theresa May has promised to serve a full five years in Downing Street if the Conservatives win the upcoming general election.
Her stance contrasts with David Cameron revealing before the 2015 general election that he would not serve beyond 2020 - an announcement which immediately set off intense speculation over who would succeed him.
With the Tories enjoying a consistent double-digit poll lead over Labour, May appears on course to be returned as prime minister on 9 June.
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Appearing on a Facebook Live event with ITV News yesterday, she insisted she would see through the Brexit process and remain in the top job until at least 2022.
That would take her near to the six years served by Cameron, who stepped down in July last year, having announced his resignation immediately after the result of the EU referendum.
"I’m focused as you might expect me to say on the election on 8 June and winning that election, if I’m elected I will certainly serve my full term and Brexit is obviously, the two years of Brexit are due to be finished in 2019," May said.
"I’ve always said there may then be an implementation period but I want to make sure Brexit happens and that it’s a good deal for the UK.
"I think we can do it in two years, that’s what the Lisbon Treaty says is the time that is set to do it. I think I’m pretty certain it can be done in those two years but a new Parliament will take it through to 2022, which is three years beyond the 2019 deadline and I will be around."