Who is Liz Truss? The prime minister who sees herself as disruptor-in-chief

A young Liz Truss could hardly have imagined walking through the famous black door of Number Ten as a Conservative prime minister.

After a political journey that has taken her from Liberal Democrat to Tory, Remainer to Brexit enthusiast, awkward speaker to "queen of Instagram", as a colleague put it, she has made her own luck in this contest.

The long-serving cabinet minister had a slow start in the early rounds of voting with MPs, but her optimistic outlook - which her critics say defies reality - and plan to overturn conventional thinking on the economy have won over party members.

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But it's now voters she will need to convince, during an unprecedented cost of living squeeze. What does Ms Truss believe, and what kind of prime minister might she be?

David Gauke first crossed paths with Ms Truss in the 1990s when both were Conservative activists, and they later served in cabinet together during the turbulent Brexit battles.

"I think Liz has always been ambitious, she's always been someone who has said to herself, 'Well why not me, why can't I make it to the very top?'" he said.

Unlike Boris Johnson, he said, she believes in "straightforward Conservative values" such as a smaller state, but is also "an outsider" with a disregard for expert advice.

Ms Truss has vowed to cut taxes, despite concerns about inflation, and challenge economic policies which she says for 20 years have failed to deliver growth.

"She's always been suspicious about the state intervening too much," Mr Gauke said.

"Her temperament is one that is suspicious of establishment. I think she tends to think there is too much power in the hands of risk averse, what she would consider to be defeatist, establishment figures, and that you've got to be bold, and you've got to be brave and you've sometimes got to take on expert opinion.

"I think that's going to be an attribute of her time in government and it's one that I have some worries about."

Early life

Mary Elizabeth Truss was born to left-wing parents in Oxford in 1975, the eldest of four siblings. When she was four, the family moved to Paisley, near Glasgow, where her father John, a mathematics professor, was working.

Her mother Priscilla, a nurse, was a member of the Campaign for Nuclear Disarmament and took a young Liz on "ban the bomb" marches where she has spoken of chanting anti-Margaret Thatcher slogans.

Ms Truss has described her parents as "to the left of Labour" and says that although her mother now supports her campaign, she's not sure her father would vote for her.

The family later settled in the affluent Roundhay area of Leeds, living in a row of now smart Edwardian terraces, where she attended Roundhay school, a state comprehensive that she has claimed let pupils down through "low expectations". She credits the experience with inspiring her to go into politics.

Former pupils do not remember her as a strong personality. One who was in the same class said she was "extremely clever and generally regarded as a 'swot' in the terminology of the 1980s and 1990s". A former teacher at the school said she was "clever, but you wouldn't have marked her out".

The school sent a small number of pupils to Oxbridge every year at the time, and she won a place to study politics, philosophy and economics at Merton College, Oxford.

She has described herself during the campaign as a "plain-speaking Yorkshirewoman".

Student radical

Drawn into politics as a student, Ms Truss became president of the Oxford University Liberal Democrats and campaigned to abolish the monarchy.

To the dismay of Paddy Ashdown, the party leader, she moved a motion at the party's annual conference in Brighton in 1994, declaring "we Liberal Democrats do not believe people are born to rule."

David Laws, later a cabinet minister in the coalition government, was then a junior adviser to Ashdown and said: "I remember Paddy pacing up and down the press room in Brighton and saying, 'Oh my God, if this motion that Liz is moving, gets passed, that would be the end of the Liberal Democrats'."

By the time she graduated in 1996, Ms Truss had moved towards the Conservatives, and went to work at Shell and later in government relations for Cable & Wireless.

Lord Robertson of Port Ellen, the company's chairman at the time and a former Labour defence minister, remembers her ambition when the Conservatives were in the doldrums.

"She was very interested in politics and was a Tory, and I encouraged her to go for a seat," he told Sky News. "She was smart and fresh-thinking; I said the Conservative Party needs people like you."

After unsuccessfully contesting two seats in West Yorkshire in 2001 and 2005, she was picked out by David Cameron's "A list" and was selected for the safe seat of Southwest Norfolk in 2009. By then, she had married Hugh O'Leary, an accountant, and had two young daughters.

Members of the local party tried to have Ms Truss, then 34, deselected for failing to declare an earlier affair with Mark Field, a married Conservative MP.

Her battle with party members in the rural constituency - whom newspapers nicknamed the "Turnip Taliban" - made national headlines for weeks. She eventually won them over in a vote and held on to the seat, but the experience nearly derailed her career.

Lord Robertson added: "She's obviously a fighter, she showed real grit when they took her on, and there was an element of prejudice there."

In government

Ms Truss started climbing the ministerial ladder in 2012 as a junior education minister - and tried to push through some controversial reforms to childcare.

Mr Laws, then schools minister in that department, found her determined to drive her ideas through - whatever the criticism.

"I always found Liz to be a very engaging minister, somebody was pleasant to work with," he said.

"But she isn't necessarily one of the world's best listeners. She tends to speak at people and over them rather than listening to their views."

On one occasion, he said, she asked civil servants to draw up a list of staff-to-child ratios at nurseries in other countries to support her proposals. But he says the list they produced did not support her view that Britain was an outlier. "She asked the civil servants to delete that bit from the briefing," Mr Laws said.

He recalled her manner when she travelled to Moscow in February as foreign secretary: "I remember her having that meeting with [Sergey] Lavrov, the Russian foreign minister, and he described it as a dialogue of the deaf.

"While I've got no sympathy obviously with the Russians, I can imagine how that must have been… she sort of ploughs on and on and on. I had to smile."

In cabinet

As environment secretary, her first cabinet post, she became known for an awkward speech in which she described Britain's cheese imports as "a disgrace".

But more revealing are her speeches and articles campaigning for Britain to remain in the EU alongside Mr Cameron and George Osborne in 2016.

"It's in all of our interests to communicate the real impact on the ground… on jobs on livelihoods, because what we know is less trade would mean fewer and fewer investments," she told an audience at the Food and Drink Federation.

Her change of heart on Brexit, and, as trade secretary, energetic pursuit of deals, many of them rolled over from Britain's EU membership, attracted admirers from the right of the party.

As foreign secretary, she has taken a hard line on Russia, raised the alarm about the threat from China and helped secure the release of Britons held in Iran.

She is passionate about economic issues, and colleagues say it was at the Treasury that her ambitions and image really took off.

Sonia Khan was special adviser to Philip Hammond, the chancellor, when Ms Truss was appointed chief secretary to the Treasury in 2017 - having been demoted by Theresa May after a difficult spell as justice secretary.

"I think the Treasury was the making of Liz, it was where she gained so much confidence after losing her justice job," she said. "She came into her own and revitalised her image. You saw the floral outfits disappear and you saw her wear power suits, and really bold colours, which I think reflected a newfound confidence.

"It's where she discovered social media. She'd found a space to cultivate who she is. She's funny, she's quite good with puns, she's got an eye for making sure a picture looks good.

Ms Khan says her status as "queen of Instagram" boosted her profile within the cabinet. "It was very clear that she had this very, very keen political eye for the policies that she wanted to own and promote on social media."

On taking the Treasury job, she tweeted: "I aim to be to the disruptor-in-chief", saying she wanted to cut red tape and empowering families and businesses.

As prime minister, she's promised radical measures to tackle the cost-of-living squeeze within a week of taking office. Allies say she has the inner steel to drive them through.

But inheriting a grim outlook, and a party deeply divided by this contest, she won't have long to win over some of her colleagues and the public.