Money expert Martin Lewis says mobile phone customers can save money by sending a text to a 5-digit number.

Company-sponsored text numbers are different. There’s no area code, no digit spacing. Will the scammers figure out how to make it look like a 4-digit number?

Speaking on his ITV programme, The Martin Lewis Money Show, he said people could save hundreds each year by simply texting a 5-digit code.

So Bloch and his team built Digit like a messaging app. Opt in for daily updates on your account, or text to check your balance. Transfer funds out of your Digit account by just texting ...