To provide an additional level of security and help prevent fraud, we now ask for the unique security number featured on most debit and credit cards.
Most UK Cards:
On the majority of UK issued cards the security number is the last three digits of the number featured at the top of the signature strip on the back of your payment card. (Please note this security number will not be printed on your order confirmation.) On American Express cards the CV2 number is a 4-digit number that appears above one end your card number
If you can't read your security number please contact the card issuer.