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Lloyds says IT glitch exposed data of up to 447,936 customers

Lloyds Banking Group says an app error caused nearly half a million Lloyds, Halifax and Bank of Scotland customers to see other people’s transactions or have personal data displayed, and the bank is investigating and working with regulators.

Mar 27th 2026 · United Kingdom

Insights

  • Up to 447,936 customers were affected, the bank told the Treasury Select Committee.
  • 114,182 customers clicked and saw transactions belonging to other people in their apps.
  • Some users may have been shown account details, national insurance numbers and payment references.
  • Lloyds says it fixed the error promptly, is investigating the cause and has apologised.
  • The bank will cooperate with the Financial Conduct Authority and the Information Commissioner’s Office, which are making enquiries.