The numbers don’t often lie, and it’s not a pretty one for Rachel Reeves
- UK 30-year gilt yields hit 5.72% intraday before settling at 5.69% on Tuesday, their highest since May 1998, a 27 year peak. At the same time, the pound fell as much as 1.5% against the dollar to $1.334 before rising to $1.338.
- Gilt yields are, in effect, the UK government’s “interest rate” for borrowing. A 30-year gilt is a 30-year loan: the principal is repayable at maturity, with coupons paid along the way. Rising yields mean investors are demanding higher returns to hold UK debt, a sign of weak market confidence.
- Think of it like a credit score. If your score falls, you pay more to borrow. Right now, markets are saying:
- “UK, I’m not sure whether I can trust you right now to repay.”
Why this matters for policy
- The trouble comes weeks before the Autumn Budget, adding pressure on Chancellor Rachel Reeves.
- Higher debt servicing costs shrink her fiscal “headroom”, analysts estimate it’s fallen to just over £4bn, down from £9.9bn in the Spring Statement.
- Reeves’ fiscal rules require day-to-day spending to be covered by tax revenues by the end of the parliament. If Reeves fails this rule, it signals that Britain is borrowing to keep the lights on, which undermines credibility and can potentially push gilt yields even higher.
Market dynamics at play
- Persistent inflation & debt
- Inflation remains sticky, and the UK’s debt load is rising. These dual forces push investors to demand higher bond risk premia.
- Global backdrop
- The UK is not alone: US Treasuries and German Bonds also sold off this week. However, Britain stands out due to rising inflation, the highest amongst the G7 since the COVID-19 pandemic.
- Investor jitters on sterling
- Analysts at ING called sterling’s fall a “clear signal of how jittery the market is when it comes to long dated bond moves.” Typically, when bond yields rise, it makes a country’s assets more attractive to investors because they get higher returns. That tends to support the currency, but here, the opposite occurred: yields rose, and sterling fell, indicating that investors view rising yields as a sign of stress rather than strength.
- Political overlay
- Sterling’s slump came a day after PM Keir Starmer reshuffled his economic team, adding Minouche Shafik, former Bank of England deputy governor, as financial adviser and strengthening coordination with Reeves. Downing Street, however, stressed this reinforced, not undermined, the Chancellor.
- Supply & demand dynamics
- The Treasury raised a record £14bn from a syndication of 10-year gilts on Tuesday, attracting £140bn in orders. Demand remains robust, but only at significantly higher yields.
Bottom line
- UK 30-year gilts, close to 6%. For long-term investors, the income on offer looks tempting, when compared to current equity risk premiums.
- Unlike the US and Germany, where higher yields reflect short term drivers (such as US debt worries and German defence spending), the UK is suggesting a different view: weak growth, sticky inflation, and rising public debt. In other words, UK yields are high because markets want a risk premium.
- Rachel Reeves is running out of room. Higher borrowing costs eat into her budget, and she’ll be forced to choose between spending cuts or tax rises. Neither is popular, as taxes are already high with slight economic improvement, but she is likely to opt for a mix of both. Reeves has promised to make the “hard choices,” and markets will expect her to prove it.
- The £1 trillion question: How does she win back market confidence without choking the economy? That answer will set the direction for gilt yields, sterling, and the UK’s credibility compared with its G7 peers.
Continue reading our research
To continue reading the full note and explore the complete body of our work, visit the Research Library.