Question to the Department for Work and Pensions:

To ask the Secretary of State for Work and Pensions, how many people (a) currently at pension age or (b) close to pension age have had their state pensions affected by National Insurance contribution underpayments in error in each of the last 5 years.

In May this year, the Department published the report, ‘Fraud and error in the benefit system,’ available on gov.uk [here]. The detailed information requested is not available.