The European Central Bank would publicly pledge to backstop financial markets in tandem with the Bank of England should Britain vote to leave the European Union, officials with knowledge of the matter told Reuters.
The preparations illustrate the heightened state of alert ahead of the June 23 referendum, which will help determine Britain's future in trade and world affairs and also shape the EU. The pound and euro have lost value on fears a Brexit could tip the 28-member bloc into recession.
Such an announcement from the ECB would come on June 24 if an early-morning result showed that British voters had chosen to leave the EU, according to the sources. The aim is to underpin investor confidence across Europe and contain further market jitters.
"There will be a statement to do whatever it takes to maintain adequate market liquidity," said one senior central bank official, who spoke on condition of anonymity.