Burnham's spending vows leave UK bond markets on edge
British Prime Minister Andy Burnham has announced a suite of spending pledges including a VAT cut on energy and a defence boost, but a lack of clear funding mechanisms is raising alarm among bond investors already wary of elevated debt and the economic impact of the Iran war.
Andy Burnham used his first full day in office to announce a six-month cut of VAT on energy bills from 5% to zero, starting on 1 October. The prime minister framed the move, which saves a typical household £45 a year and trims headline inflation by 0.1 percentage points, as providing "breathing space" for households. However, the announcement immediately raised questions about how the new government intends to balance its books.
Downing Street claims the £850m cost for 2026-27 will be covered by scrapping Keir Starmer’s £1.8bn digital ID programme. Helen Miller, director of the Institute for Fiscal Studies, noted the mismatch in timelines, warning that the government "will therefore still need to make around £850m of as yet unspecified cuts from other departmental spending to pay for this". Critics also argue the policy is poorly targeted. "If the goal is to help low income households, a VAT cut is a poor lever since the biggest cash gains will go towards richer households," Miller said.
Market attention has also shifted to defence spending following the appointment of John Healey as chancellor, a move that sent shares in UK-listed defence firms higher. Burnham must find an extra £4.7bn over five years, with a further £10.3bn needing to be raised by reallocating budgets across Whitehall. Healey hinted at the direction of travel, stating that "fiscal credibility is the bedrock for economic stability and for national security, and you heard the prime minister this afternoon say, in this more dangerous world, we will meet our commitments on defence to our international allies."
A shrinking fiscal margin
These pledges arrive as the fiscal headroom against Labour's own rules shrinks. The Resolution Foundation estimates the buffer has narrowed from £23.6bn in the spring to roughly £10bn today. "There is no spare cash lying around," the thinktank warned. Burnham has already rowed back on hints about unfreezing the income tax personal allowance, a policy that tax expert Dan Neidle dismissed as the "wrong" measure, noting that a £6bn increase would yield just £140 a year for basic-rate taxpayers.
For infrastructure and housing, the prime minister is eyeing flexibility within his fiscal rules, potentially using public financial institutions to borrow up to £16bn. Analyst Andrew Wishart of Berenberg said investors "would probably be content to finance additional borrowing for such investment if they were confident that the development corporation would break even". Yet with the Office for Budget Responsibility warning of an "unsustainable" debt trajectory and Morgan Stanley describing the fiscal wiggle room as "very modest", bond investors remain highly alert to the UK's elevated borrowing levels.
