Britains vote to leave the European Union came as a "surprise to many," Finance Minister Seth Terkper has said in a media interview.

Terkper told Accra based Citi FM that 'the vote has come as a surprise to many people' on Friday.

He added that 'luckily, we are going into the weekend and most financial markets will close.'

Terkper also downplayed the impact of Brexit on Ghana's economy.

He added that London stands to lose significantly because it is the financial hub of the world.

Standard & Poor's rating agency has warned Britain may lose its AAA ratings status after voting to leave the EU.

"We think that an AAA-rating is untenable under the circumstances," S&P chief ratings officer Moritz Kraemer told the Financial Times.

Meanwhile international relations expert Vladimir Antwi Danson has said Britain will go through economic slowdown between now and the next three years.

Speaking on Joy FM's Super Morning Show Friday, Antwi Danso said it will take a minimum of 18 months for the UK economy to rebound because they'd have to realign their financial industry.

"Britain would have an economic slowdown between now and the next three years. That is normal in a political economy.

"The economy is going to slowdown from the minimum of between 18 months to three years before it shoots off because everything: their finances, their fiscal policies, foreign policy.... everything," he said.