http://www.bbc.co.uk/news/business-44335804
I do love that most people are blaming Jamie Oliver for this in the UK, saying he's trying to interfere with the Friday Night Takeaway.
Card payments are failing across the UK and elsewhere in Europe, Visa has said.
Customers have been complaining that payments are being declined, but some report contactless transactions are proving more successful.
Barclays and Bank of Ireland advised customers to use ATMs to withdraw cash, which appear to still be working.
Visa is working to resolve the issue but one payments firm said transactions were now working intermittently, but there was a backlog.
The Payment Systems Regulator told the BBC it understood the problem to be limited to Visa card payments only.
Mastercard and American Express both said their networks were working.
Supermarket Tesco said chip and pin payments were not affected, but contactless payments were. Sainsbury's also said it was experiencing problems.
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Responding to complaints on social media, HSBC said there were issues with processing Visa payments, which were intermittent, but were "slowly recovering".
Jay Curtis, 32, is in Swansea and had two cards declined in B&Q.
"I had £240 worth of stuff in my trolley," he told the BBC.
"My card just wouldn't go through. I tried and again and then I tried with another card but it still wouldn't go through.
"I didn't have cash on me so I had to drive all the way home."
The Bank of England, which oversees electronic payment providers such as Visa, said it was "aware of the issue currently affecting Visa and working with the firm to resolve the situation".
Transport for London said it expected customers to still be able to use their contactless payment cards to pay for travel on its buses, trains and Tubes.
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Bank of Ireland
✔@talktoBOI
We are aware some customers are experiencing Visa debit card issues. This is impacting multiple banks across Europe. We will update when we know more. Cash withdrawals can be made at any BOI ATM.
4:16 PM - Jun 1, 2018
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However, Paymentsense, which runs card services for small businesses, said transactions were now starting to go through but there was a backlog.
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Paymentsense@Paymentsense
We now understand that #contactless transactions have a better chance of going through. We’d encourage affected customers to try contactless transactions where possible.
5:22 PM - Jun 1, 2018
I do love that most people are blaming Jamie Oliver for this in the UK, saying he's trying to interfere with the Friday Night Takeaway.
