Buying stuff with a credit card gives you some additional protection if (when!)things go wrong. I've always understood that this was because you're effectively taking out a short-term loan and therefore all sorts of consumer credit protection legislation applies.
Now, with a prepaid card there's no 'loan' involved (except from you to the bank), so does it provide the same level of protection? I've had a quick scan, but haven't found a definitive answer on t'Internet. Does anyone know for sure whether this is the case? If not, it may be worth the £5 fee to gain the additional protection. (Not if you're only paying 1p for the flight, of course
).