There have been widespread reports of Visa and Mastercard outages across the UK. Many users have been unable to make payments at major retailers like McDonald’s, Asda, Sainsbury’s, and M&S. The issues seem to be affecting both credit and debit card transactions.
Sources:
https://www.independent.co.uk/tech/visa-mastercard-down-not-working-payment-issue-b2577990.html
AC