Mark Carney said the Bank of England is ready to inject billions of pounds into to Britain’s financial system after Britain voted to leave the European Union.

Mark Carney, the governor of the Bank of England, declared that the central bank is ready to provide an extra £250 billion through its existing facilities. He sought to reassure investors saying the UK is “well prepared” for the event.

“Some market and economic volatility can be expected as this process unfolds. But we are well prepared for this.

“The Treasury and the Bank of England have engaged in extensive contingency planning and the chancellor and I have been in close contact, including through the night and this morning,” Carney said.

His comments came following Prime Minister David Cameron’s announcement that he will step down later this year.

Members of the British public took it to Twitter to mock Carney’s calm words.

“Mark Carney, Bank of England governor – he who predicted recession – now trying to calm nerves and project stability,” user Chris Ship tweeted.

Another user said Mark Carney was in “full reassurance mode”.

George Monbiot, a British writer known for his environmental and political activism, tweeted: “Mark Carney is putting on a good show of confidence. But there's a shrill note of panic in the background.”

The Bank of England previously said it will “take all steps necessary” to ensure financial stability in the UK in the wake of the Brexit referendum vote.

Confirmation that the UK has voted to end its 43-year membership of the EU sent sterling down to a three-decade low on Friday morning.

The FTSE 100 plunged more than 8 per cent on opening in its biggest slump since the 2008 financial crisis, wiping £120 billion off the value of the 100 biggest UK companies.

Shares in Royal Bank of Scotland, Lloyds and Barclays fell as much as 30 per cent on opening, before rebounding slightly to trade at 16.7 per cent, 18 per cent and 17 per cent in mid-morning trading.

Statement from Bank of England governor Mark Carney

The people of the United Kingdom have voted to leave the European Union.

Inevitably, there will be a period of uncertainty and adjustment following this result.

There will be no initial change in the way our people can travel, in the way our goods can move or the way our services can be sold.

And it will take some time for the United Kingdom to establish new relationships with Europe and the rest of the world.

Some market and economic volatility can be expected as this process unfolds.

EU referendum - in pictures Show all 18 1 /18 EU referendum - in pictures EU referendum - in pictures A woman in a wheelchair with British and European Union flags shows her support for the United Kingdom to remain in the European Union on the day of the EU Referendum in Gibraltar Getty Images EU referendum - in pictures A polling station being used in the EU referendum at Batley Town Hall in the constituency Labour MP Jo Cox PA EU referendum - in pictures People arrive to vote in the EU Referendum at the Library where British MP Jo Cox was shot and fatally wounded last week in Birstall EPA EU referendum - in pictures A man arrives to vote at a polling station for the Referendum on the European Union in north London REUTERS EU referendum - in pictures Voters queue to enter a polling station at Trinity Church in Golders Green in London Getty Images EU referendum - in pictures British Prime Minister David Cameron and his wife Samantha Cameron leave after voting in the EU Referendum at Central Methodist Hall, Westminster Getty Images EU referendum - in pictures Labour Party leader Jeremy Corbyn cast his vote at a polling station at Pakeman Primary School in Islington Getty Images EU referendum - in pictures Chelsea pensioners arrive at a polling station near to the Royal Chelsea Hospital PA EU referendum - in pictures A woman wearing an "I'm In" t-shirt, promoting the official "Remain" campaign, leaves a polling station in London AFP/Getty Images EU referendum - in pictures People queuing outside a polling station on Amott Road in London PA EU referendum - in pictures Scotland's First Minister and Leader of the Scottish National Party (SNP), Nicola Sturgeon and her husband Peter Murrell, react as leave after casting their votes at a polling station at Broomhouse Community Hall in east Glasgow AFP/Getty Images EU referendum - in pictures A man wearing a European themed cycling jersey leaves after voting at a polling station for the Referendum on the European Union in north London REUTERS EU referendum - in pictures Ukip leader Nigel Farage arrives to cast his vote at Cudham Church of England Primary School in Biggin Hill, Kent PA EU referendum - in pictures Justice Secretary and prominent 'Vote Leave' campaigner Michael Gove poses with his wife Sarah Vine after voting in the European Union referendum at their local polling station in Kensington Getty EU referendum - in pictures Nuns leave a polling station after voting in the EU Referendum in London EPA EU referendum - in pictures People arrive to cast their ballots in the EU Referendum in Gibraltar. The United Kingdom and its dependant territories are going to the polls to decide whether or not the the United Kingdom will remain in the European Union Getty Images EU referendum - in pictures A man driving a van covered in stickers urging people to vote for the United Kingdom to remain in the European Union drives outside a polling station on the day of the EU Referendum in Gibraltar Getty Images EU referendum - in pictures A sign on a gable wall in Belfast's, Loyalist Tigers Bay urging voters to leave the EU using scripture from Revelation 18:4, as voters head to the polls across the UK in a historic referendum on whether the UK should remain a member of the European Union or leave PA

But we are well prepared for this. The Treasury and the Bank of England have engaged in extensive contingency planning and the chancellor and I have been in close contact, including through the night and this morning.

The Bank will not hesitate to take additional measures as required as those markets adjust and the UK economy moves forward.

These adjustments will be supported by a resilient UK financial system - one that the Bank of England has consistently strengthened over the last seven years.

The capital requirements of our largest banks are now ten times higher than before the crisis.

The Bank of England has stress tested them against scenarios more severe than the country currently faces.

As a result of these actions, UK banks have raised over £130bn of capital, and now have more than £600bn of high quality liquid assets.

Why does this matter?

This substantial capital and huge liquidity gives banks the flexibility they need to continue to lend to UK businesses and households, even during challenging times.

Moreover, as a backstop, and to support the functioning of markets, the Bank of England stands ready to provide more than £250bn of additional funds through its normal facilities.

The Bank of England is also able to provide substantial liquidity in foreign currency, if required.

We expect institutions to draw on this funding if and when appropriate, just as we expect them to draw on their own resources as needed in order to provide credit, to support markets and to supply other financial services to the real economy.

In the coming weeks, the Bank will assess economic conditions and will consider any additional policy responses.

Conclusion

A few months ago, the Bank judged that the risks around the referendum were the most significant, near-term domestic risks to financial stability.

To mitigate them, the Bank of England has put in place extensive contingency plans.

These begin with ensuring that the core of our financial system is well-capitalised, liquid and strong.

This resilience is backed up by the Bank of England's liquidity facilities in sterling and foreign currencies.

All these resources will support orderly market functioning in the face of any short-term volatility.

The Bank will continue to consult and co-operate with all relevant domestic and international authorities to ensure that the UK financial system can absorb any stresses and can concentrate on serving the real economy.

That economy will adjust to new trading relationships that will be put in place over time.

It is these public and private decisions that will determine the UK's long-term economic prospects.

The best contribution of the Bank of England to this process is to continue to pursue relentlessly our responsibilities for monetary and financial stability.

These are unchanged.

We have taken all the necessary steps to prepare for today's events.