United Kingdom vs Eurozone

The UK-Eurozone pair is the Brexit-era comparison that matters most for macro. Before 2016 the UK was deeply embedded in single-market trade flows and the BoE tracked the ECB closely through the transmission of Eurozone inflation and growth. Post-2016 the relationship has divergence on several axes. Trade in goods with the EU has fallen as a share of UK total trade by roughly 5 percentage points, services trade has held up better, and financial services have partly relocated to the EU but with the City of London retaining dominance in derivatives clearing and FX. The BoE has moved from shadowing the ECB to setting policy more closely against the Fed, because UK services inflation dynamics look more like the US than the Eurozone.

The gilt-Bund 10Y spread is the clearest market read on the divergence. Gilts have historically traded at modest spreads above Bunds reflecting UK credit risk and higher inflation expectations; the spread widened sharply during the 2022 gilt crisis and has normalised since. The sterling-euro rate has been less volatile than dollar-yen or dollar-sterling but remains sensitive to relative growth and policy expectations. Structurally the UK runs a persistent services surplus and a goods deficit with the EU; the Eurozone is internally more balanced but carries a large aggregate current-account surplus. Energy dependence differs materially: the UK is a net energy importer with limited domestic production, while the Eurozone is also net importing but has more diversified supply (including LNG and pipeline gas).

The current read is the BoE-ECB rate gap, the gilt-Bund 10Y spread, and the sterling-euro rate. A BoE holding above the ECB supports sterling and widens the gilt-Bund spread; a narrowing gap pulls sterling down. Watch the 2Y and 10Y gilt-Bund spreads, UK CPI vs HICP, and sterling-euro.