British Finance Minister Rachel Reeves stood before Parliament on Tuesday to present a spring fiscal update anchored in forecasts from the Office for Budget Responsibility (OBR), even as an intensifying conflict in the Middle East casts doubt over the projections and the nation’s economic trajectory.

The OBR’s latest projections, prepared before the escalation of hostilities involving the United States, Israel and Iran, showed that inflation and public borrowing are expected to fall more rapidly than previously anticipated and that the government’s fiscal “headroom” has widened to around twenty-three point six billion pounds.

At the same time, growth for 2026 has been revised down to around one point one per cent, reflecting weaker momentum than forecast at the previous budget, although modestly stronger expansion is expected in 2027 and 2028. Reeves emphasised that these figures underscored the strength of her economic strategy and the progress made in stabilising public finances in an uncertain global environment.

Despite Reeves’ reassurances, global financial markets reacted nervously to the Middle East conflict, with energy prices climbing sharply and government borrowing costs rising.

Brent crude and wholesale gas prices have surged in recent sessions, fuelling concerns that sustained energy price volatility could push inflation higher and erode the modest gains in public finances.

Gilt yields climbed markedly as investors scaled back expectations for interest rate cuts by the Bank of England, undermining some of the OBR’s assumptions about future borrowing costs.

The OBR itself has acknowledged that the unfolding conflict “could have very significant impacts on the global and UK economies,” highlighting the extraordinary uncertainty surrounding the current forecasts.

Analysts warned that if current oil and gas price levels endure, inflation could be driven back toward or above earlier projections, shrinking tax receipts and tightening the government’s fiscal headroom.

Financial institutions and private banks have already adjusted their holdings of British government bonds in anticipation of further volatility.

Meanwhile, consumer price inflation is still expected to average around two point three per cent in 2026 and to converge toward the Bank of England’s two per cent target in subsequent years, a forecast that could be undermined by persistent energy cost pressures.

Political risks compound the economic uncertainties.

Prime Minister Keir Starmer’s Labour government, while asserting its commitment to economic stability, has seen diminished support in recent polls and suffered a notable by-election defeat.

Reeves urged her party colleagues to uphold fiscal discipline and resist political instability that she said would jeopardise the progress achieved so far.

Think tanks and economic commentators cautioned that difficult fiscal choices lie ahead, with potential implications for tax policy, public services funding and the spending plans to be outlined in future budgets.

As international tensions continue to unfold, the UK’s economic outlook remains delicately balanced between cautious optimism and the threat of renewed inflationary and market shocks.