Money Saving Expert Martin Lewis shared a trick holidaymakers abroad should be aware of - and how it could save you precious pennies. If you're conscious of keeping costs down when you go out to eat or drink while abroad, you may want to turn your attention to the way in which you pay.

In a recent episode of The Martin Lewis Podcast on BBC Sounds, the Money Saving Expert had some sage advice for travellers who pay using plastic. Discussing the question, "Should you pay in Pounds or Euros on plastic abroad?" Martin shared one of his methods for reducing costs.

Whether you're paying for dinner or withdrawing money at a cash point, you may notice that the point of sale machine or card reader will ask you whether you want to pay in the local currency or Great British Pounds. This is a choice that everyone is given, but Martin explained that there is in fact a correct answer.

Martin said: "Well the correct answer is you should always pay in Euros or whatever the local currency is, because that means it's your plastic that's doing the exchange rate conversion, not the overseas shop or ATM."

The best way to ensure you're getting the most for your money is to have a specialist overseas debit or credit card. Martin explained that these cards can help give you a "near perfect exchange rate".

He continued: "But even if you don't have one of those, then even your bog standard UK credit or debit card that's adding about a three per cent fee onto the exchange rate, in all the experiments I've done and when most people go abroad, they do a pub crawl, I do an ATM crawl to check these rates.

"In all the experiments I've done, even a bog standard UK card is beating most overseas ATMs, or shops exchange rates so you want it to do the conversion which means you must always pay in the local currency.

"Pay in Euros, pay in dollars, pay in Dong if you're in Vietnam."