Britain has expanded its overdraft with the Bank of England to help weather coronavirus disruption, it said Thursday.

The government's "ways and means facility" -- effectively its overdraft account at the BoE -- is being used to temporarily help finance spending on COVID-19 emergency measures, the Treasury and central bank announced in a joint statement.

A limit of ?370 million ($455 million, 420 million euros) has been extended by an undisclosed amount, while the government has pledged stimulus worth billions of pounds.

"HM Treasury and the Bank of England have agreed to extend temporarily the use of the... long-established Ways and Means facility," said a joint statement.

"As a temporary measure, this will provide a short-term source of additional liquidity to the government if needed to smooth its cashflows and support the orderly functioning of markets, through the period of disruption from COVID-19."

The government will continue to use markets as the main source of cash, while its virus-emergency response will be "fully funded" via the normal debt channels.

The measure will allow the British government to 'smooth its cashflows'
The measure will allow the British government to 'smooth its cashflows' AFP / Justin TALLIS

Any money drawn from the overdraft facility will be paid back as soon as possible before the end of the year, according to the statement.

As Britain's coronavirus crisis accelerated, Britain ordered a three-week lockdown on March 23, shutting down swathes of the economy.

Finance minister Rishi Sunak had unveiled a series of multi-billion-pound packages to help those affected.

Notably, the government has stepped in to back up employee wages by up to 80 percent, give tax holidays to businesses and boost welfare payments.

The Bank of England has also been at the forefront of Britain's economic firefighting in response to the pandemic, which has so far killed more than 7,000 people in the UK.

The bank had last month slashed its key interest rate to a record-low 0.1 percent and expanded its quantitative easing policy -- under which it buys UK government and corporate bonds -- to ?645 billion.