The DWP has issued advice for pensioners who are not getting their full state pension.
In the guidance, the DWP says some can consider adding up to six years of voluntary contributions to top up the amount they get every week or month later in life, if they do not currently qualify for the full state pension of £141.85 a week.
The advice issued applies to men born between April 6 1945 and April 5 1950 and woman born between April 6, 1950, and October 5, 1952.