Various groups of women, however, may be required to take different actions.

Women who have husbands who reached State Pension age on or after March 17, 2008, can have a claim backdated all the way if they missed out. 

This is because of the computer error at the Department for Work and Pensions which has been subsequently corrected. 

However, those who have a husband reaching State Pension age before March 17, 2008, could potentially miss out. 

Government rules mean these women can only have payments backdated for a year, as the boosted payment was not automatic. 

Those in this group can still claim at the correct rate, but can only receive backdated payments of up to 12 months. 

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