The rating agency Moody's said on Monday that Britain's exit from the European Union (EU) ("Brexit") would have a negative impact on the country's economy.

"In our view, a decision to leave the EU would be credit negative for the UK economy," a senior vice president at Moody's, Kathrin Muehlbronner, said.

The agency noted that the outcome of the referendum remained "too close to call". Moody's added that the economic costs of Brexit would outweigh the economic benefits.