UK Gilt yields rose sharply, with a 10–12bp move across the curve. The rise followed a UK market holiday on Monday, but the move was larger than shifts in Bunds or US Treasuries, pointing to added pressure in Gilts.
Long-dated Gilt yields remain higher than levels seen before 2011. The sell-off was compared to past periods linked to political and fiscal strain.
Political Uncertainty And Market Sensitivity
Political uncertainty is focused on Thursday’s local elections and leadership stability. Polymarket indicates a near 70% implied probability that PM Starmer will not remain in office through to the end of 2026, near recent highs.
Polling estimates Labour losing 1,164 council seats (from 2,303). The Conservatives are forecast to lose 563 seats, while the Liberal Democrats gain 121 and the Greens gain 456; Reform is projected to gain 1,401 seats.
Downside risks for sterling are linked to the prospect of extended political uncertainty. Additional pressure could come if Middle East tensions push crude oil prices higher.
We remember the sharp jump in Gilt yields around this time last year, which was driven by political fears surrounding the 2025 local elections. Those concerns about PM Starmer’s leadership proved to be a critical turning point for market sentiment. That period of instability has left a lasting impression on how investors view UK assets.
Sterling Volatility And Hedging Demand
The downside risks for the Pound that were identified back then ultimately materialized, with GBP/USD falling below 1.22 in the final quarter of 2025 and failing to meaningfully recover. As of today, the currency continues to show weakness, reflecting a persistent political risk premium. This suggests that any rallies in the Pound are likely to be sold into until there is greater clarity.
Given this backdrop of lingering uncertainty, implied volatility on sterling options has remained elevated, with 3-month GBP/USD vol currently trading near 9.0%. This environment makes buying sterling puts a prudent, albeit expensive, strategy to hedge against further sudden drops tied to political headlines. Traders should be wary of selling volatility, as the potential for unexpected policy or leadership news remains high.
The UK 10-year Gilt yield, now holding around 4.6%, continues to trade at a premium to U.S. Treasuries, indicating that bond investors still demand compensation for the UK’s specific risks. We see this as a clear signal that the fiscal concerns from last year have not disappeared. Derivative positions should therefore be structured to account for the possibility of further yield spikes.
We must also consider how external shocks, like rising oil prices, could impact the currency. With Brent crude recently climbing back over $90 a barrel, the UK’s economic vulnerabilities are magnified, just as we feared in 2025. This makes sterling positions particularly sensitive to geopolitical events in the Middle East over the coming weeks.
