Erwin Boogert pointed me to this BBC NEWS item on an attack of Worldpays systems. Worldpay is a payment systems provider servicing credit-card payments for 27.000 retailers. It is receiving numerous autorisation requests since Tuesday; something known as a Denial of Service attack (DoS).
Worldpays website is too slow to open at this moment. Yet at another website we learn that WorldPay says it hopes to restore services to near-normality by the close of business today. Also, Worldpay, part of Royal Bank of Scotland group, stresses that no consumer information has leaked.