European regulators have accused Germany and its banks of reneging on a deal to publish full details of sovereign debt holdings, as part of the four-month-long stress test exercise of the country's banking sector.

In an interview with the Financial Times, Arnoud Vossen, secretary-general of the Committee of European Banking Supervisors, the pan-European banks regulator, said: “We agreed with all supervisory authorities and with the banks in the exercise that there would be a bank-by-bank disclosure of sovereign risks.”

On Friday CEBS published the results of its stress test exercise, showing seven of the 91 banks tested across the 27 countries of the European Union failed to achieve a tier one capital ratio of 6 per cent once their balance sheets were exposed to a series of macroeconomic scenarios for 2010 and 2011.