UK's biggest banks pre-emptively ban AI agents from customer accounts

The United Kingdom's largest banks have moved to block AI agents from accessing customer accounts, the Telegraph reported. HSBC, NatWest, Barclays, Lloyds and Nationwide have each imposed restrictions — some barring transactions on a customer's behalf without direct involvement — in a pre-emptive step, with no evidence yet that bots have accessed UK accounts. Executives cited unclear liability if an agent errs and potential deposit outflows: industry analysis cited in the report estimated up to £700 billion could move out of low-yielding savings on chatbot advice, and a 5-10 percent shift could cut deposit profits by as much as a fifth. The Financial Conduct Authority is drafting rules alongside other regulators.

The market is splitting into two camps. On the other side, US identity vendor Socure, whose clients include 19 of the top 20 US banks, has launched Agent Intelligence: agent detection, a trust score, and binding agents to verified human identities, with detection generally available and credentials planned for early 2027. Its chief executive argues that blocking all agents blocks the next customer, and that institutions should verify and allow instead — a framing that is shaping the debate regulators on both sides of the Atlantic are now entering.