HSBC has announced it will be offering automatic refunds to hundreds of thousands of customers who accidentally left money in HSBC cash machines between 2005 and 2011.
The bank stated that refunds would be credited to customers' accounts in due course, although the process would not be immediate.
Customers have previously had to contact the bank to claim back any money left in a cash machine, regardless of the circumstances or scenario, with the bank holding onto it instead.
Earlier this year, Royal Bank of Scotland confirmed that it would be making refunds of around £10 million to around 300,000 of its customers who left notes in an ATM.
A spokesperson for HSBC, said: "The bank is now working with its industry body towards proactively refunding customers.
"There is no need to take any action – we will contact HSBC customers directly and will contact non-customers via their own bank, to advise details of any refund."
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