Shoppers at Asda stores have been unable to pay by card this afternoon following an issue with the tills.

A member of staff at the Asda store in Penryn, Cornwall, said initially there was just a problem with card payments.

However, a short time later they could not accept cash payments either.

One customer said the store was turning people away at the door.

"They are standing at the door turning people away," she said.

It appears that the issue has now been resolved at the Cornwall store.

The staff member said the tills were up and running by about 4pm.

It seems that Asda stores across the country were affected by the technical issue.

There have been reports of issues at various Asda stores.

On Twitter, one user wrote: "Asda card machines are down. Howler."

Another said: "@Asda I'm currently in your Drakehouse Sheffield branch, card machines are not working. Cash only, really inconvenient when I have a trolley full of shopping and 2 kids. Surely a company of Asda's size should have a back up for this? 2nd time at this branch too.. Poor"

Another frustrated shopper added: "I cannot tell you how much fun it is to spend 45 minutes at Asda with one’s somewhat impatient children only to get to the tills and find they can only take cash and the cash points are empty."