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Commons Speaker Sir Lindsay Hoyle has reprimanded Chancellor Rachel Reeves for giving interviews to reporters in the US about her upcoming Budget.

Parliamentary rules say major government announcements should be made to MPs in the Commons, ahead of journalists.

An exasperated Sir Lindsay said failing to do so was a "supreme discourtesy to the House" and he was "very, very disappointed" with Reeves.

Responding to the criticism, the prime minister's spokesman said it was "entirely routine for government to make announcements in the run-up to Budgets and spending reviews".

He added that Parliament would have "all the requisite time to scrutinise measures clearly".

Reeves will deliver her first Budget on Wednesday in the Commons.

Last Friday, she outlined her plan to "change the way that we we measure debt" during a meeting of the International Monetary Fund (IMF) in Washington.

She explained she planned a technical change to loosen self-imposed limits on borrowing, to free up billions of pounds extra for infrastructure spending on projects such as roads, railways and hospitals.

The government has promised to get debt falling as share of the economy during the course of this parliament, rather than over a rolling five-year period.

Speaking in the Commons on Monday, Sir Lindsay said the policy changes "could hardly be described as a leak" when she had given on-the-record interviews, including to the 91�ȱ�.

He said: "Ministers should expect to face proper, sustained scrutiny when these announcements are made to the elected members of this House and not the American news channels."

This was because Reeves' comments were major new policy announcements with "significant and wide-ranging implications for the government's fiscal policy and for the public finances", he added.

The Speaker said this was "totally unacceptable" and asked why Reeves expected MPs to wait "almost a week" simply to hear her repeat her announcements in her Budget statement.

MPs might be wondering, he added, "how they will get a seat on Wednesday. Well, to be honest the way it's going you won't need to - we'll have all heard it."

With Treasury minister Darren Jones making a statement to the House on "fiscal rules" later on Monday, the Speaker remarked: "Perhaps no coincidence."

Alluding to previous breaches of parliamentary rules, Sir Lindsay noted that, when in opposition, Labour would complain about the previous Conservative government behaving in a similar manner, and demanded: "Get your acts together, all sides, treat Members with respect."

On Tuesday, Conservative shadow Treasury minister Laura Trott also criticised the government's pre-Budget announcements.

"The response from No 10 yesterday seemed to be that their whole argument is, 'Well, we did it because you guys did it'," she said.

Acknowledging that, when in power, her own party also revealed Budget details to the media, she said: "This government seems to be taking lessons from the worst bits of our record, and not just ours but the last Labour government too.

"It's like the greatest hits of government mistakes being replayed in just 100 days."