Gilt yields hit 19-year high: can John Healey's budget calm the markets?

The interest rate on 10-year UK government bonds reached its highest level since July 2007 on 8 October, a 19-year high, after jumping 0.06 percentage points by lunchtime in London. The move was not a British story alone. UK 30-year gilt yields topped 6% for the first time since 1998. France's 10-year borrowing costs hit their highest since 2002.

The sell-off has been driven by inflation fears linked to the US-Iran war and elevated energy prices, alongside rising defence spending and broader fiscal pressures. Because the move is global, the UK cannot simply wait it out. Higher gilt yields raise the interest the government pays on its debt, squeezing the public finances. Treasury sources concede they have "less room" for manoeuvre ahead of the budget, citing oil prices and the global bond selloff.

Bank of England governor Andrew Bailey urged Chancellor John Healey to agree a budget that convinces financial markets. Healey will deliver his first budget on 28 October, alongside the Office for Budget Responsibility's latest forecasts. That date now functions as a credibility test with markets, not just a political set-piece.

The pressure has knock-on effects for mortgages, consumer costs and the government's ability to support households facing high energy prices. By later in the week, the 10-year yield had dropped to about 5.37%, below the 19-year high reached earlier, while the two-year yield slid more than six basis points to around 4.77% — a reminder that these levels are moving, not fixed.

What remains unknown is how much of the UK's borrowing-cost rise is global versus UK-specific fiscal risk, and whether Healey's budget will calm markets or gilt yields will keep climbing. The trajectory of the Iran war and oil prices will shape whether yields retreat or set new highs. What is clear is that the UK's 19-year high is one data point in a synchronized repricing of government debt across the US, France and beyond.

- [theguardian.com](https://www.theguardian.com/business/2026/oct/08/medium-term-borrowing-costs-uk-government-19-year-high) - [uk.finance.yahoo.com](https://uk.finance.yahoo.com/news/bonds-steady-french-borrowing-costs-094512294.html) - [theguardian.com](https://www.theguardian.com/business/2026/aug/18/governments-borrowing-costs-us-iran-bond-yields-trump) - [theguardian.com](https://www.theguardian.com/business/2026/sep/24/global-bond-sell-off-pressures-uk-borrowing-costs-budget) - [instituteforgovernment.org.uk](https://www.instituteforgovernment.org.uk/budget-2026) - [theguardian.com](https://www.theguardian.com/business/2026/sep/15/scott-bessent-bonds-buyback)