In the past, it was possible to claim larger State Pension payments based on a spouse or civil partner’s National Insurance record, and the date you and your partner reached State Pension age.
This would typically be a figure equal to 60% of your spouse or civil partner’s 'basic State Pension'.
The people most likely to benefit from this are women born before April 1953. The GOV.UK site outlines the circumstances that could mean you're eligible
Before March 2008, you'd have needed to make a claim for any extra amount.
After March 2008, this should be happening automatically.
However, it's come to light that many people weren't aware they needed make a claim before March 2008 and, since then, the automatic process might not have happened correctly.
The Department for Work and Pensions (DWP) has responsibility for the State Pension. The DWP has acknowledged that some people have been underpaid and have started an exercise to put this right They've stated:
“Where underpayments are identified, the department will contact the individual to inform them of the changes to their State Pension amount and of any arrears payment they will receive in accordance with the law.”