CS is poor
You can get the same benefit through MSE on this link - http://www.moneysavingexpert.com/credit-cards/prepaid-travel-cards.
So is weswap.
flex account from Nationwide let you withdraw any currency from any ATM at any country with 0 interest. their credit card let you pay at any shop in any country in any currency with 0 interest and with the best currency rate. Recommended.