Pensioners of the Civil Service Pension Scheme have received historic overpayments of £22m and face reduced pensions to correct the mistake.
"The ongoing Guaranteed Minimum Pension reconciliation work has identified historic overpayments of £22 million to existing pensioners," the scheme said in its 2016-17 account.
"These pensions will be corrected going forward and a decision taken in October 2017 to write off the historic overpayments which is classified as a loss," it added.
Garry Graham, deputy general secretary at union Prospect, said: “The proposed reductions in future pension income will cause real hardship as members’ expectations are based on the level of pension they thought they were entitled to."
