Lloyds admits almost half a million bank customers are affected by account errors that expose transaction data

• About 450,000 customers were affected by a recent banking app bug
• Lloyds has paid out £139,000 in goodwill payments to 3,600+ customers
• The finance committee wants two more updates after one and six months

As many as 447,936 bank customers may have had their data exposed or seen other banks’ transactions during an IT failure on March 12, 2026 affecting those using the Lloyds, Halifax and Bank of Scotland mobile apps, a report has confirmed.

New findings from the Treasury Board note that 114,182 users clicked into transactions that potentially allowed them to see sensitive information such as account numbers and National Insurance numbers.