Rishi Sunak vowed to lead a government with “integrity, professionalism and accountability at every level” in his first speech in Downing Street.
But the PM has become notorious for chucking promises made to voters in both the 2019 Conservative manifesto and his bid to become party leader.
Pledges on keeping people’s taxes low, increasing the state pension and maintaining foreign aid spending were all ditched in his time as chancellor.
Now as Prime Minister he is rapidly axing many of the things he promised to Conservative party members in the leadership race last summer.
In the past few days alone, Mr Sunak’s government has been forced to admit it has failed to deliver on his promises to bring down NHS waiting lists and to get rid of EU laws.
Here are some of the promises Mr Sunak has broken:
NHS waiting lists
Mr Sunak promised in his Tory leadership campaign to put the NHS on a “war footing” and in January said “cutting waiting lists” was one of his top priorities.
But figures released yesterday show the number of people in England waiting to start routine hospital treatment has risen to a record high of 7.3million people.
The Government has missed a key target of eliminating 18-month waits for planned NHS care such as knee and hip replacements, which Mr Sunak had promised would be met by April.
Data from NHS England shows 10,737 people had been waiting longer than this at the end of March.
Mr Sunak vowed to create a backlogs taskforce to get waiting times down on “day one” of his premiership, but he did not do this for several weeks.
Scrap EU laws
An eye-catching video to promote his leadership campaign saw bundles of EU laws being put through a shredder.
But Mr Sunak is facing anger from Tory MPs after the government last night announced a humiliating U-turn on its pledge to ditch thousands of bits of legislation from before Brexit.
Jacob Rees-Mogg said: “Regrettably the Prime Minister has shredded his own promise rather than EU laws.”
In the campaign video last summer, the PM’s team had promised: “In his first 100 days as prime minister, Rishi Sunak will review or repeal post-Brexit EU laws.”
The Retained EU Law Bill, introduced during Liz Truss's premiership, set a 31 December 2023 deadline to scrap all bits of legislation ministers did not want to keep.
But Business Secretary Kemi Badenoch announced yesterday around 600 laws would be revoked - rather than the 4,000 pledged - insisting it is "about more than a race to a deadline".
Wind farms
Facing a rebellion from Tory MPs - including former PMs Boris Johnson and Ms Truss - Mr Sunak U-turned on onshore wind farms.
Under current rules energy companies are allowed to build wind farms at sea but strict rules have effectively prevented new sites in the countryside.
During the Tory leadership race, Mr Sunak vowed never to "relax the ban on onshore wind in England, instead focusing on building more turbines offshore".
But the Government has since announced a consultation.
Under the proposals, planning permission would be dependent on a project being able to demonstrate local support and appropriately address any impacts identified by the local community.
£10 fines for missed GP appointments
During his failed bid for No10 last summer, Mr Sunak outlined plans to punish people who did not turn up for NHS appointments.
This included a controversial plan to fine patients £10 for missed GP and hospital slots. "I will charge people who waste valuable NHS time," he declared.
The policy was criticised by health leaders and unions with the British Medical Association saying it would "make matters worse" in the health service.
Abandoning the policy, a No10 spokeswoman said: "We have listened to GPs and health leaders, and have acknowledged that now is not the right time to take this policy forward".
Fracking ban
The Tories' 2019 election manifesto declared that the ban on fracking would remain in place "unless the science shows categorically that it can be done safely".
In an attempt to appeal to the Tories' membership in the summer, both Mr Sunak and Ms Truss replied "yes if local communities support it '' when asked about their support for fracking.
Britain's shortest-serving PM Ms Truss lifted the ban on fracking shortly after winning the keys to No10.
But Mr Sunak later told the Commons he "stands by'' the 2019 manifesto and asked whether fracking was "back in the bin", the PM's spokesman said: "That's correct".
National Insurance
The Conservative Party's 2019 election manifesto makes uncomfortable reading for Mr Sunak.
All of the parties MPs, including the now PM, stood on the platform that included a pledge there would be no rises in income tax, National Insurance or VAT.
But as chancellor, Mr Sunak ditched this promise and announced a hike in National Insurance.
This rise was later ditched by Ms Truss during her brief spell in No10.
Pension triple lock
The triple lock is a promise that was made in the 2019 Conservative manifesto on increasing the state pension every year.
It rises by 2.5%, average earnings or inflation in September of the previous year, whichever is highest.
In September 2021, the Government axed the triple lock for one year in favour of a 'double lock' of just 2.5% or inflation.
Ministers did this to avoid putting up the 2022 state pension in line with earnings growth, which would have meant an 8% rise to the retirement benefit.
The Government argued such an increase would be unfair given that so many people were still struggling due to Covid.
In the end the 2022 state pension rose by 3.1%.
Defence spending
A key defence spending pledge was ditched when Mr Sunak was chancellor.
The last Tory election manifesto promised to "continue to exceed the NATO target of spending 2% of GDP on defence and increase the budget by at least 0.5% above inflation every year of the new Parliament".
But as prices have increased rapidly, the government has axed the vow to spend 0.5% above inflation.
Ministers blamed coronavirus for the decision, which emerged last June.
A Government source said: “That manifesto was written before £400billion had to be spent locking people up for their own safety because of a global pandemic.”
Foreign aid target
Billions of pounds were slashed from the foreign aid budget by Mr Sunak as chancellor.
The 2019 Conservative manifesto promised: “We will proudly maintain our commitment to spend 0.7 per cent of GNI on development.”
But in November 2020, Mr Sunak announced he would axe the target as he battled with the impact of the coronavirus crisis on the economy.
The spending target has been lowered to 0.5%, with massive cuts made to projects around the globe in some of the poorest countries.
In 2021, UK aid spending fell 21% compared to 2020 to stand at £11.4billion.
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