Millions of people have been getting the wrong pension for years with 23% of pensioners being underpaid, the BBC has discovered. The Government has been aware of the problem since the 1990s.
The Department for Work and Pensions (DWP) told the BBC it is "investigating possible remedies". The BBC says 17% of people are being overpaid with some people being both underpaid and overpaid in different years.
The DWO decided in 2002 that it would be too complicated to fix the problem.
