Mistakes made by the Department for Work and Pensions (DWP) led to millions of people missing out on around £400 each in 2022.
The Express reports processing errors meant just over 10% of all State Pension cases, around 1.3 million pensioners, had underpayments.
The average amount underpaid was more than £400 per person and came at a time when many people were struggling with the cost of living crisis. The colossal underpayments were discovered because the government is now actively carrying out checks rather than using estimates.
