Richard Hughes has resigned as chair of the Office for Budget Responsibility, after the UK fiscal watchdog accidentally leaked its analysis of Rachel Reeves’ Budget before the chancellor delivered it.
The announcement of Hughes’ exit came shortly after an OBR review of last week’s market-moving error found that the same failures had allowed early access to the Spring Statement in March, raising concerns that earlier Budgets could also have been compromised.
In a letter to Reeves and the House of Commons Treasury select committee on Monday, Hughes said he was quitting to help the OBR “quickly move on from this regrettable incident”.
In what Hughes described as a “technical but serious error”, the OBR had uploaded Budget documents on to part of its website without the necessary protections to prevent early disclosure.
Monday’s OBR report into the leak of its Budget analysis described the episode as the “worst failure in the 15-year history” of the fiscal watchdog.
Hughes’ resignation comes at a moment of high tension between the Treasury and the fiscal watchdog.
Reeves and Prime Minister Sir Keir Starmer are facing accusations of misleading the public after Hughes wrote to MPs on Friday to reveal that OBR forecasts for the public finances had been healthier than the chancellor suggested earlier in the autumn.
Hughes was due to testify about the Budget tomorrow at the Treasury committee, but he will now not appear at the hearing. The OBR will be represented by the remaining members of its budget responsibility committee, Tom Josephs and David Miles.
Senior economists said Hughes had been a firmly independent and effective head of the OBR who would be a difficult chair to replace.
“He leaves big shoes to fill in the UK fiscal framework,” said Ruth Curtice, the head of the Resolution Foundation think-tank and ex-head of fiscal policy at the Treasury.
However, MPs said there was no doubt that the OBR’s reputation had been hit badly by the premature data release.
The OBR is meant to release its economic and fiscal outlook (EFO), which contains market-sensitive economic forecasts, policy costings and judgments on the government’s fiscal rules, once the chancellor has presented the Budget to the Commons.
But last week’s OBR assessment was released nearly an hour before Reeves began speaking, sparking sharp movements in bond markets as investors digested the nearly 200-page document.
Investors were initially unsure whether they could trust the news flashes ahead of the scheduled release. “It’s one of those moments where you have to do double, triple, quadruple takes,” said James McAlevey, head of global aggregate and absolute return at BNP Paribas Asset Management.
The OBR report found it routinely uploaded its documents before publication time to facilitate “immediate and widespread access” to them at the appropriate time. But it wrongly assumed that it had configured its website, which it managed using WordPress software, to prevent early access.
On the morning of the leak last Wednesday, the first online evidence of the EFO being prematurely available was when Reuters began sending headlines on its contents from 11.41am, well ahead of the intended start of Reeves’ Budget speech at 12.30pm, according to the report.
The first successful request to access the document had been at 11.35am — from an IP address that had made 32 previous unsuccessful attempts over the course of the morning.
Ciaran Martin, an Oxford university professor who advised the OBR review, told the Financial Times that the large number of attempts to access the document from one address raised concerns that the person or people may have been aware an early upload was possible.
“It is reasonable for people to infer that the address which tried 32 times belonged to someone who believed the document would be uploaded early,” he said.
Between 11.35am and 12.07pm, there were 43 successful attempts to access the URL assigned to the EFO, from 32 unique IP addresses, the report said. From 11:50am “images of and facts from” the EFO began appearing widely online, the report added. At 12.08pm the PDF was taken back offline.
It was not the first time that someone would have been able to see the contents of a chancellor’s fiscal statement ahead of time, the report said.
“It is very likely that the weaknesses that caused the premature accessing of the November 2025 EFO were pre-existing,” it added.
Referring to Reeves’ Spring Statement in March, the report said: “The logs show that one IP address successfully accessed the document at 12:38, five minutes after the chancellor had started speaking and nearly half an hour before publication.
“There are some indications the IP address may be linked to accounts within UK government and/or other public authorities within the UK.”
It was now “essential” that a more detailed forensic digital audit of some of the most recent fiscal events is undertaken, the report added.
James Murray, chief secretary to the Treasury, described the OBR’s findings as “very serious indeed”.
However, Oxford university’s Martin said establishing the full facts of whether outsiders had accessed OBR documents ahead of other fiscal events “might be difficult” as he was unsure how long the logs were kept.
Martin added that “less than a week” was a “very short period of time” for a probe into such an incident, and that further findings may be uncovered in due course.
“It would not surprise me if aspects of the technical picture were modified or changed in the course of subsequent investigative work, especially around the exact number of accesses and where they might have come from, in respect of both the 2025 fiscal events,” Martin said.
The OBR review, led by Laura Gardiner, the watchdog’s chief of staff, cast blame at the Treasury and Cabinet Office for failing to fix flaws in the OBR process but found that the “ultimate responsibility” for the leak lay “with the leadership of the OBR”.
In his letter, Hughes said he had “decided it is in the best interest of the OBR for me to resign as its chair and take full responsibility to the shortcomings identified in the report”.
“I want to thank Richard Hughes for his public service and for leading the Office for Budget Responsibility over the past five years,” Reeves said.
“This government is committed to protecting the independence of the OBR and the integrity of our fiscal framework and institutions.”
Additional reporting by Ian Smith in London
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