Those behind the initiative said that the new joiners will mean that 159 covers 99.2% of UK current accounts.

The arrival of Chase and Modulr takes the number of banking destinations on 159 up to 19, with Revolut becoming the 20th once it has completed its onboarding process over the next few weeks.

Already included in the initiative are Bank of Scotland, Barclays, Co-operative Bank, First Direct, Halifax, HSBC, Lloyds, Metro Bank, Monzo, Nationwide Building Society, Natwest, Royal Bank of Scotland, Santander, Starling, Tide, TSB, and Ulster Bank.

The service is has been in operation for three years. It came into being following a collaboration between telecoms providers and UK banks. More than 700,000 calls have been made to 159 since its launch, the Herald reports.

Sean Hegarty, head of fraud for Chase, said: “The 159 hotline is a vital service, providing an even simpler way for customers to call Chase quickly if you suspect you’re being targeted by a scammer.”

Myles Stephenson, CEO and founder of Modulr, added: “Fraud prevention is more crucial than ever, and 159 has proven to be a vital tool in that fight.”

Woody Malouf, group head of financial crime at Revolut, commented: “We are delighted to be joining 159, an incredibly important service that helps break the spell of the scammer.”