Britain's public sector net debt surpassed 100% of gross domestic product in May as borrowing came in higher than expected, the Office for National Statistics said on Wednesday.

Public sector net debt, excluding that of state-controlled banks, hit 2.567 trillion pounds ($3.28 trillion), equivalent to 100.1% of gross domestic product.

That represented the first time that debt stood above 100% of GDP since 1961 although it was temporarily recorded as passing that threshold during the COVID-19 pandemic before being revised lower.

The ONS said government borrowing in May stood at 20.045 billion pounds. A poll of economists had pointed to public sector net borrowing, excluding state-owned banks, of 19.5 billion pounds.

(Reporting by William Schomberg; editing by David Milliken)