Martin Lewis has issued a warning to Brits with a European holiday booked this summer, as he issued his verdict on buying travel insurance. The Money Saving Expert urged all holidaymakers to make sure they have travel insurance booked before jetting off this summer, adding: "If you can afford the holiday, you can afford travel insurance." Lewis suggests a person around the age of 18 can get travel insurance for a weeks holiday in Europe for as little as £7, at the bottom level.