Prepaid currency cards

Oneputt

Probably won't apply to many caravan/motorhome users but you should be aware money on your card can be ringfenced for upto 30 days - read the below

http://www.dailymail.co.uk/money/holidays/article-2710241/Find-holiday-cash-card-frozen-especially-decide-rent-car-whilst-youre-abroad.html