Overview
- Problems began around 11:00 BST on August 27, with more than 4,700 outage reports for HSBC on DownDetector by about 11:30.
- Customers reported error messages including an “err03” code, missing balances and transaction data, and declined online payments.
- HSBC acknowledged the fault, said it is investigating as a matter of urgency, and directed urgent cases to branches and telephone banking.
- First Direct, owned by HSBC, was also affected, with some users seeing balances but unable to open account details or complete actions.
- On August 26, NatWest apologised after a brief mobile‑app disruption that some users linked to the Sainsbury’s Bank migration; the bank said the issue was resolved.