Britain’s biggest bank has written to customers with such accounts to ask them to take proof of identity to a branch on the island, or risk having their accounts closed.
The bank, under fire for helping customers of its Swiss arm avoid tax, said: “We continuously review details we hold on all our customers to ensure we have the information we need to protect them, together with wider society, against fraud and other financial crime.
“With financial crime becoming more sophisticated, keeping accurate, up to date information on customers such as complete proof of identity or address, helps us monitor transactions effectively for potential fraudulent activity.”
Other banks have also been taking steps to verify the identity and residence of their account holders in Jersey.
Barclays said it “takes its responsibilities seriously, whether it is to know our clients, or through compliance with the range of agreements that Jersey has in place with tax authorities”.