State pension: Britons eligible for £8,900 from DWP underpayment error – how to claim

AN INVESTIGATION into the underpayment of state pensions has discovered a significant error which could see some Britons entitled £8,900. According to the National Audit Office , around 134,000 pensioners over £1 billion in state pension. Can you claim this £8,900 in state pension backpay?
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