Buying currency from an airport is the MoneySaver’s equivalent of filling up a petrol car with diesel – it’ll seriously damage your financial engine. I somehow resisted the temptation to stop the poor souls queuing for cash at a jam-packed Luton Airport bureau on Saturday morning from throwing much of their hard-earned cash into the mitts of profiteering airport...

We’ve always warned against paying in pounds abroad, and on a trip to Greece last week I saw the worst example I’ve ever witnessed of the perils of doing so. With the peak summer-holiday period approaching and your pound getting you even fewer euros, dollars etc following the Brexit vote, there’s even more reason to heed this...