British holiday-makers abroad say they have been told they cannot exchange their money because of market chaos following the Brexit decision.

Banks and hotels have refused to convert the pound into local currency, after its value plummeted, according to a string of reports from around the world.

Tourists in Greece, the USA, Australia and Bulgaria said they had been left penniless after hotels, banks and cash machines blocked transactions involving Sterling.

The reports come amid volatility in the market, with the pound to Euro exchange rate falling sharply on Friday, before rebounding.

In Australia, the Commonwealth Bank and NAB suspended the exchange of the British pound.

Commbank alerted tourists with a tweet, stating: “We are sorry but due to recent results from the British exit referendum we are temporarily suspending all foreign exchange of GBP pounds and transactions that do not include AUD until the morning of Monday, 27 June”.