The U.K. is facing a difficult fiscal backdrop ahead of its October 28 Autumn Budget, with former Bank of England chief economist Andy Haldane warning that the country is “on thin ice” and that the government needs to reassure financial markets.
Haldane, who served on the Bank of England’s Monetary Policy Committee until 2021, told CNBC that the government should focus on controlling public spending rather than relying heavily on further tax increases.
His comments come as British government borrowing costs remain elevated and investors closely watch Chancellor John Healey’s first Budget. The government has said it intends to maintain its fiscal rules while creating a buffer against uncertainty.
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Why Britain Is Under Fiscal Pressure
The U.K. is entering the Budget with several challenges, including elevated borrowing costs, persistent inflation pressures and weak economic growth.
Recent moves in the gilt market highlight the pressure. In September, the U.K. sold 30-year government debt at a yield of 5.8168%, the highest recorded at a gilt sale since the Debt Management Office was established in 1998.
More recently, 10-year gilt yields moved above 5.4%, while 30-year yields exceeded 6% during the global bond-market sell-off.
Higher yields increase the cost of government borrowing and can also influence borrowing conditions across the wider economy.
Haldane Warns the Government Is “On Thin Ice”
Speaking at the How Britain Can Win conference hosted by Goldman Sachs 10,000 Small Businesses UK, Haldane said there was a risk that the fiscal situation could deteriorate further if investors lost confidence.
He argued that one of the most effective ways to reduce that risk would be to demonstrate that the government is willing and able to control public spending.
Haldane also warned against focusing too heavily on businesses through additional taxation, arguing that the private sector is an important source of economic growth.
His comments represent his own assessment of the U.K.’s fiscal position rather than an official Bank of England view.
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Why UK Gilt Markets Matter
Gilts are U.K. government bonds, and their yields are closely watched because they affect the cost of government borrowing and broader financial conditions.
When gilt yields rise, the government generally faces higher financing costs when issuing new debt. Higher market yields can also influence mortgage rates, corporate borrowing costs and investor expectations about monetary policy.
For financial markets, the key issue is therefore not simply the size of government spending or taxation, but whether investors believe the government’s overall fiscal strategy is credible.
Recent reports indicate that U.K. borrowing costs were already among the highest in the G7 before the latest global bond-market pressure intensified.
What Is at Stake in the October 28 Autumn Budget?
Chancellor John Healey will need to set out how the government intends to finance its priorities while remaining within its fiscal rules.
The Budget is expected to address several areas, including:
- Public spending
- Welfare policy
- Defence spending
- Taxation
- Economic growth
- Fiscal headroom
The Institute for Government has described the Budget as a major test for the new government, particularly given pressure on the public finances and the need to reassure markets.
Healey has also said the government wants to create a fiscal buffer against uncertainty.
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Could Banks Face a Windfall Tax?
Tax policy is another area attracting market attention.
Burnham has not ruled out tax increases, while British media reports have suggested that a windfall tax on banks could be considered.
However, no such measure should be treated as confirmed before the Budget itself.
Banks operating in Britain have opposed the possibility of additional taxation, while Haldane has argued against placing too much emphasis on taxing businesses.
For financial markets, the final design of any tax measures could matter because investors will assess both their immediate revenue impact and their potential effect on investment and economic growth.
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Welfare Spending and the Triple Lock
Welfare spending is another important part of the fiscal debate.
The U.K.’s triple lock currently links state pension increases to the highest of inflation, average earnings growth or 2.5%.
Haldane described moves by the government to reconsider the mechanism as a potentially important first step, while also noting the political sensitivity surrounding welfare policy.
The wider issue is whether the government can reduce spending pressures while maintaining its political commitments and fiscal rules.
What Does the Budget Mean for the Bank of England?
Fiscal policy and monetary policy are closely connected.
If government spending or tax measures increase demand, they could influence inflation expectations. At the same time, higher government borrowing costs can tighten financial conditions.
The Bank of England must also assess how fiscal policy interacts with inflation, economic growth and financial-market conditions.
This is particularly important because the U.K. is already dealing with persistent inflation pressures and elevated borrowing costs. Recent market moves have also increased expectations that interest rates could remain higher for longer.
What Could the Budget Mean for GBP?
The pound could respond to the Budget through several channels.
A fiscal package viewed by investors as credible could potentially support confidence in U.K. assets, while measures that increase concerns over borrowing, inflation or future debt issuance could put additional pressure on gilt yields and sterling.
For traders, the most important signals will likely include:
- The government’s fiscal headroom
- Tax and spending measures
- OBR forecasts
- Gilt-market reaction
- Changes in interest-rate expectations
- The government’s projected borrowing requirements
The direction of GBP will depend on how those factors compare with market expectations rather than on any single Budget announcement.
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Market Impact
For traders, the October 28 Budget is a major GBP and gilt-market event. Higher borrowing costs and fiscal uncertainty can increase volatility in sterling and U.K. government bonds, while a credible fiscal framework could help stabilize market expectations.
The key market signals to watch are gilt yields, GBP/USD, EUR/GBP, inflation expectations and Bank of England rate expectations.
Conclusion
Britain enters the 2026 Autumn Budget with elevated borrowing costs, persistent inflation pressures and limited fiscal flexibility.
Andy Haldane’s warning that the U.K. is “on thin ice” reflects concerns about the government’s ability to balance spending commitments, taxation and market confidence.
The outcome of the October 28 Budget will therefore be important not only for the U.K.’s public finances but also for gilts, sterling and expectations for Bank of England monetary policy.


