Since the pandemic, the influence of global markets on the UK has intensified. Approximately half of the movements in the UK's government bond (gilt) yield curve are now driven by external factors, primarily from the U.S. and Eurozone, up from one-third pre-pandemic.

The recent sell-off in European rates was not primarily caused by fiscal concerns. Instead, a key driver was the unusual failure of the money market curve to 'bear flatten' as expected during a front-end repricing. This atypical steepening, combined with energy prices and positioning washouts, pushed intermediate yields higher.

UK Sterling weakened despite news that personal income tax hikes might be avoided in the upcoming budget. This counterintuitive reaction, paired with rising Gilt yields, signals that investors are more concerned about the government's fiscal discipline and policy uncertainty than they are optimistic about potential short-term stimulus.

While investors focus on high government debt, the UK is undergoing the most severe fiscal consolidation among G7 nations, according to IMF data. Medium-term plans target a deficit below 2% of GDP by 2030, a positive trajectory that seems mispriced by the market, given current high bond yields.

Any knee-jerk steepening of the UK gilt curve after the upcoming by-election and a potential Labour leadership change should be viewed as a trading opportunity to fade. It is too early to price in fiscal implications; the real risk premium will only become a factor closer to the autumn budget.

UK markets have strongly priced in a specific budget result: significant income tax hikes and a major rebuild of fiscal headroom. This creates a risk that any deviation or a less aggressive fiscal consolidation could surprise investors and cause curve steepening.

Despite a major by-election result opening the door for a new Prime Minister, UK gilt markets remain largely unmoved. This demonstrates that bond markets will only price in a political risk premium when there are clear and immediate implications for fiscal policy, which is not yet the case.

The recent rise in UK 10-year and 30-year gilt yields to multi-year highs is not due to UK-specific fiscal concerns. Instead, the sell-off is primarily explained by global factors, particularly the strong correlation with and spillover from US Treasury yield movements, rather than a repricing of UK fiscal risk.

In a global environment where risk premiums are scarce, the UK government bond market stands out for offering significant compensation to investors. For example, the market is pricing a 10-year gilt yield of 6.6% ten years from now—a very high rate that suggests a significant gap between market perception and potential economic reality.