In a gradual ascent to the top, former foreign secretary Liz Truss has become the country's next prime minister as she replaces ousted Boris Johnson in a bid to shake things up in No10.
As one of cabinet's longest-serving members, she has enjoyed a colourful tapestry of political allegiances. From anti-Thatcher protests in childhood to anti-monarchy Liberal Democrat loyalties at university - not to mention the pivot from staunchly pro-remain to Brexit backer - the journey to becoming a Tory right-wing favourite is extraordinary.
Truss has vowed to be a disruptive force at the helm of parliament, as she plans to cut taxes and scrutinise longstanding economic policies that she believes are stunting growth amidst growing pressure to tackle the cost of living crisis.
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Her confident rhetoric and ambitious promises feel miles away from the infamous awkward rant about cheese imports during her first cabinet post as environment secretary - but the transformation didn't happen overnight.
Eagle-eyed political pundits have pointed out that Truss' voice has undergone a complete overhaul as speeches from her early career reveal a high pitched, fast paced tone, whereas the Truss we know today speaks far lower and slower.
It's not abnormal for politicians to perfect their diction as many hire speech coaches to fine tune their pitch and delivery in a bid to seem more engaging and authoritative to peers and the public.
Margaret Thatcher famously hired a voice coach from the National Theatre in her early political career after realising that the public had no appetite for her sometimes-shrill voice.
The elocution lessons transformed the late prime minister's voice as she became renowned for her slow speech style and deep vocals.
Truss appears to have followed suit, as the new prime minister gradually revealed a noticeably lower voice with a far slower delivery as she rose up the ranks to secure the top job.
The new prime minister's speech style is incredibly different to that of her predecessor, as Johnson is famed for his theatrical charisma that tends to spill over into rambling.
Chris Arning, a public speaking expert and member of speech skills organisation Toastmasters International, tells The Mirror: "Boris’s blarney and confidence are clearly to the fore. These have helped him to deflect a lot of the accusations he received at the despatch box.
"He uses all sorts of humour; self-deprecating or subtly self-aggrandising, to deflect criticism rhetoric.
"Boris frequently uses hyperbole, alliteration, florid metaphors and sometimes even flaunts his classical education. He is happy to make himself the butt of the joke".
Commenting on the stark differences between the upcoming leader's speech style and ousted Johnson's, Arning added: "Liz Truss uses humour much more sparingly and it is not something she seems to take to easily.
"She joked about her penchant for Claire’s Accessories in the leadership debate, but it felt out of her comfort zone.
"It seems Truss is to humour as cats are to swimming – they can do so if forced to, but they’d prefer not to. You wonder how she will cope at the despatch box. But she may yet surprise us with her adaptability, as Theresa May did when she took readily to savaging Jeremy Corbyn ".
The expert added: "Given the focus on policy, facts and absence of self-reference, humour and irony, we can safely say that she is less of a showman and more of a technocrat".
It's no wonder politicians seek to train themselves into having a lower speaking style, as research shows that leaders with lower vocals do better in the polls.
Researchers from the University of Miami in Florida and Duke University in Durham, North Carolina, found that the electorate associate leadership qualities with deeper dulcet tones, and are less convinced by nasally notes and high-pitched speakers.
Regardless of whether Truss deliberately followed the footsteps of Thatcher in transforming her voice and delivery - the reality is that all female leaders are faced with the pressure of appearing just as commanding as their male colleagues.
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While Boris can get away with blustering emotional rants, Truss feels compelled to take a colder approach, according to Arning.
"Truss is more monotone in her speaking style, injects less emotion into her voice and looks less energised in general.
"When she modulates her voice, it is quite restrained and never quite hits the highs".
Outside of politics, other high profile businesspeople have also adapted their voices in order to project a certain image.
Elizabeth Holmes, the founder of a Theranos - a disgraced medical company which falsely claimed to diagnose diseases with a single drop of blood - famously used a different voice that was 'all an act' according to former colleagues.
Meanwhile the "Soho Scammer", AKA Anna Delvey - whose real name is Anna Sorokin - used an accent that was deliberately difficult to place in order to pose as a wealthy German heiress - despite being Russian.
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