In answer to your question...

There may be a number of reasons why your card has not been accepted. These include:

• You may simply have entered an invalid card number. The most likely reasons for this are that you have mistyped the card number or missed some of the digits, or you have not entered the card number we need. Please try again, checking your typing carefully.
• The card type you have specified (e.g. Visa, Debit) does not appear to match the card number supplied. Please go back and check that the card type selected is correct.
• Your bank has declined to authorize payment for this amount.
• Your card may be of the type that requires the cardholder to be present and is therefore not suitable for telephone/Internet bookings.
• We regret that we are currently unable to accept American Express cards.