Almost one million people are missing out on a DWP gateway benefit that allows access to discounts and rebates worth thousands of pounds.
According to the Department of Work and Pensions (DWP), around 850,000 families entitled to Pension Credit did not claim it in the 2019/20 financial year.
Around £1.7 billion ready to be distributed to families went unclaimed - each eligible family, on average, missed out on around £1,900 in the 12-month period.