ING Groep NV's interest rate strategy team highlighted that UK gilts exhibit a structural premium in risk sensitivity compared to German bunds. Their quantitative model indicates that if the UK government fails to deliver on fiscal sustainability commitments in the November 26 budget, the 10-year gilt yield could undergo significant repricing.

The report specifically warns of three policy risks: expanded public spending, increased bond issuance, and inflation-driven tax hikes—all of which could undermine market confidence in UK fiscal discipline. According to Tradeweb data, the 10-year gilt yield has risen 4 basis points to 4.436%, with its premium over equivalent German bunds widening to 189 basis points—the largest spread since the 2022 UK "mini-budget" crisis. Derivatives market pricing shows investors' default protection costs for UK AAA sovereign ratings surged 6% to 47 basis points.