Santander has extended its deadline for submitting PPI claims as problems with its website and delays on phone lines meant customers couldn't file in time.
Officially, all PPI complaints had to be registered by 11.59pm on Thursday night, but Santander said it was still accepting claims on Friday morning.
"Due to the high volume of customers contacting us about PPI, you can continue to make a PPI complaint or to submit PPI inquiries using the details below," Santander said.
Santander has not said when the new deadline will be.
Guy Anker, deputy editor of MoneySavingExpert.com , said: “While it’s good Santander has extended its deadline for PPI claims, you need to urgently take advantage of this last minute reprieve.
"You don’t need to provide evidence that you were hampered by yesterday’s issues and you only need to provide basic information to start a claim with Santander."
But Santander was far from the only bank to struggle.
In just two days more than half a million people registered a PPI complaint on the Resolver.co.uk website alone as the deadline loomed.
As well as Santander, there were problems reported at RBS and Barclays as people went straight to the banks to lodge a complaint.
An RBS spokesman told Mirror Money yesterday: "We are aware that some customers may have experienced intermittent issues contacting us and accessing PPI claim forms."
Resolver confirmed that RBS, Santander and Barclays were the banks it saw the most problems with.
The Mirror has contacted these banks to see if they, too, would extent their deadlines.
Resolver's Martyn James told the Mirror: "Given the unprecedented rush to register a complaint on the last day of PPI, I'd expect any business that had problems with its website or contact centre to treat their customer's fairly - particularly if they can prove they couldn't make a claim on time. "
MoneySavingExpert's Anker said: “We know other banks had problems over the last couple of days and people said it took them a long time to make claims.
"If anyone has missed the deadline because of something that was the bank’s fault, we would expect any bank to show sympathy and let them put the complaint in.
"But you must do this urgently, and to be safe you should submit evidence to prove you tried – as we suggested yesterday.”
