Just been informed by someone in Finance at my work that Nat West Bank and Barclays computer system has crashed. No one has any idea why. Shops and any banks cannot accept Nat West or Barclays debit cards at the moment and cannot issue cash on these cards. Credit cards are still working. This info should be accurate but you never know so don't take it as testiment. It also affects online shopping and banking so if you are having problems this could be the cause.