The United Kingdom currently spends over £100 billion annually on debt interest payments, representing roughly one out of every twelve pounds in government expenditure. This heavy financial burden results from a combination of the country’s substantial outstanding debt and comparatively high interest rates needed to attract investors to UK government bonds, or gilts. Recent increases in gilt yields, coupled with downward revisions in economic growth forecasts, have raised concerns that these costs may not decrease, especially amid ongoing uncertainty surrounding Labour’s leadership and economic policies.

Despite a lower national debt-to-GDP ratio than countries such as France and Italy, the UK faces markedly higher borrowing costs. Ten-year UK gilts yield close to 5 percent, significantly above France’s 3.6 percent and Italy’s 3.7 percent rates. Aligning UK gilt yields with those of its European peers could reduce the government’s interest payments by nearly 25 percent, potentially saving taxpayers more than £20 billion annually. This sizable saving has prompted calls to explore unconventional strategies to lower borrowing costs.

Nearly a decade ago, Mark Carney, then Governor of the Bank of England, described the UK’s capacity to finance its debt as reliant on the “kindness of strangers,” highlighting that over a quarter of British government debt is held by foreign investors. These investors not only provide capital but also assume the risk that the pound sterling may depreciate against their own currencies, necessitating compensation through higher interest rates. The premium on UK gilts relative to French and Italian bonds indicates the market’s concerns about currency risk.

Unlike France and Italy, the UK government retains direct control over its central bank through the Chancellor of the Exchequer’s ability to adjust the Bank of England’s inflation target or influence the Monetary Policy Committee’s composition. Market participants factor in the possibility of a relaxed inflation mandate or more dovish policy stances, which could lead to higher inflation projections and a weaker pound over the medium term, contributing to elevated borrowing costs.

One proposed measure to mitigate these risks involves issuing a portion of UK government debt denominated in euros—suggested at around 10 percent of gilt issuance in the current year. This approach offers several potential benefits. First, euro-denominated debt would likely carry lower interest rates, as investors in the Eurozone would not demand premiums above those paid by France or Italy. Second, reducing sterling debt supply could decrease yields on the remaining UK debt due to scarcity and steady investor demand for pound-based assets. Lastly, diversifying the currency composition of debt issuance would lessen the UK’s exposure to a foreign investor flight triggered by fears of a pound depreciation, thereby stabilizing borrowing costs.

While euro issuance introduces currency risk at maturity—particularly if UK inflation surpasses that of the Eurozone, leading to pound depreciation—this risk serves as an incentive for fiscal discipline. Maintaining inflation in check would protect sterling value, effectively using the euro debt issuance strategy to anchor inflation expectations and encourage prudent economic management.

Overall, issuing debt in euros represents a strategic option for the UK to diversify funding sources, reduce interest expenses, and mitigate currency-related vulnerabilities within its sovereign debt portfolio.