If you are a student and receive money from your parents you may want to look into getting a prepaid cash card which works exacty like a debit card. Anyone can top it up with money which you can then use to make any purchases.
o2 the mobile phone provider offer a visa prepaid card which you can apply for free below, there are no credit checks so it is also ideal if you currently have no bank account.
Apply for free here –>
Learn more about prepaid cards here – http://prepaidcreditcardsuk.org.uk/
