Kemi Badenoch has demanded answers from Labour today, as she held them to account on the Budget leaks in a fiery Prime Ministers questions.
The leader of the opposition addressed the leaks ahead of the 12:30pm Budget and labelled it "the most chaotic Budget in history".
Ms Badenoch fumed that it is a "complete shambles" that the information from the Budget has been leaked ahead of time.
The leader of the opposition said: "This has been the most chaotic lead up to a Budget in living memory, with resignations and hostile briefings."
"Nobody wants this Budget, Mr Speaker, with resignations, hostile briefings and leaks galore, even just in the last 10 minutes, an unprecedented leak of the OBR analysis.
"These leaks have been so serious that even the former chief economist of the Bank of England has said, and I quote, that Labour's fiscal Fandango is the single biggest reason why growth has flat lined.
"Does the Prime Minister agree with Andy Haldane and does he have an explanation for this complete shambles?"
Prime Minister Keir Starmer responded: "We all know the biggest shambles in living history. The Liz Truss Budget.
Kemi Badenoch branded the Budget a 'complete shambles'
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"And what what did she say? Did she say I don't agree this must be wrong?
"No she said I think that she is 100 per cent right.
"100 per cent not much room for flexibility. Not one thing was wrong with it in her view. So we won't be taking lectures from her.
"On the matter of the OBR. That is for the Chancellor to set out the Budget in just a few minutes time."
Keir Starmer hit back at Kemi Badenoch
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Ms Badenoch asked: "Will the Prime Minister launch an investigation into the budget leaks and punish those responsible?"
Mr Starmer said: "It is literally about 25 minutes before the Budget will be set out. Where we will take further decisions and the Chancellor will set it out.
"Thanks to the decisions that she has already taken we have five million more NHS appointments, waiting lists are coming down, mortgages are cheaper, we have expanded free school meals. That is a hundred thousand children lifted out of poverty."
He added: "Compare that to the record opposite any day of the week."
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A leaked OBR document claims Rachel Reeves will keep tax thresholds frozen until 2030 pulling in £8billion for the Treasury.
It warns national debt is set to climb to 69 per cent of GDP by the end of the decade.
The revelation sent shockwaves through the markets, with gilt yields sliding as anger over the leak intensified.
And in a major setback for the Chancellor, economic growth has allegedly been revised down from 2026, with GDP forecast at just 1.5 per cent in 2025 and 1.9 per cent the following year.
Fuel duty will stay on hold until September 2026, while the two-child cap on Universal Credit is due to be lifted from next April, a change expected to cost £5.3 billion before the next election.
But the leaked OBR report warns Reeves is lining up £26 billion in tax increases.
The OBR apologised for publishing their analysis of the Budget "too early", blaming it on a "technical error" and said they have initiated an investigation into how this happened.
They added: "We will be reporting to our Oversight Board, the Treasury, and the Commons Treasury Committee on how this happened, and we will make sure this does not happen again."