Rubbish Check
Daily Mail Money · 1 September 2026
source“Bond market turmoil gives UK a £6bn debt interest headache as borrowing costs jump to highest level since 1998”
R4/ 10
Selective
Rubbish Rating — 1 = base fact, 10 = pure rubbish
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In short
Rubbish Talk rates the Daily Mail's claim that bond turmoil gives the UK a "£6bn debt interest headache" a 4/10 because that figure is a single economist's forward-looking modelled estimate for 2029/30, not a confirmed current cost, though the underlying gilt yield data cited is accurate and well corroborated.
The Verdict
Selective, not dishonest. The 30-year and 10-year gilt yield figures check out against independent reporting, but the headline's headline number, £6billion, is lifted wholesale from one analyst's back-of-envelope calculation and presented as an established fact rather than a projection contingent on OBR assumptions holding across the yield curve.
What actually happened
UK gilt yields rose to their highest levels since 1998 ahead of the October 28 Budget, driven by inflation, high borrowing, political instability and worries over the Iran war's effect on living costs. Simon French of Panmure Liberum calculated that if the yield rise seen on the 20-year gilt were applied across the curve, it would add roughly £6billion to debt interest costs by 2029/30, a figure he offered as a comparison point against defence spending gaps.
Key facts
- 30-year gilt yield hit 5.87%, the highest since 1998; independently reported yields on the same story ranged from 5.78% to 5.89% depending on the day, all corroborating "highest since 1998."
- 10-year gilt yield rose to 5.15%, only briefly exceeded on three occasions since 1998.
- The £6bn figure is Simon French's estimate of the cumulative debt interest increase by 2029/30 if the 20-year gilt's 70-basis-point overshoot versus the Spring Forecast holds across the curve, not a Treasury or OBR figure.
- UK debt interest spending in 2025/26 was around £109-110billion, equivalent to 3.6% of GDP and roughly 8% of public spending, confirmed by the House of Commons Library.
- DMO planned gilt sales of £303.7billion last financial year, second highest on record after the Covid-19 response.
- July government borrowing came in £2.3billion above the OBR's forecast, with borrowing for the financial year so far £2.3billion ahead of projection.
What to watch for
- Whether the £6billion figure gets repeated by other outlets as a settled Treasury cost rather than one analyst's projection; that repetition, without the "by 2029/30" caveat, is where the framing would drift further from the base fact.
- The Autumn Budget on October 28 will show whether the OBR's own gilt-curve assumptions are revised, which is the real test of French's extrapolation.
- Watch the 20-year gilt specifically, since that is the input French's whole £6bn calculation rests on.
About this scoreThe R-Score is Rubbish Talk's editorial opinion on how far a headline's framing sits from what the underlying facts support. It is a judgement about presentation and emphasis, not an allegation that any outlet has acted dishonestly. Every figure we rely on is linked under Receipts so you can check it yourself.
