The web address for paying tax to HMRC over the internet with a debit or credit card has changed from 20 December 2010 to www.santanderbillpayment.co.uk/hmrc.
This applies to the following taxes:

• self assessment;
• PAYE/Class 1 National Insurance;
• VAT;
• stamp duty land tax;
• corporation tax; and
• miscellaneous payments.