Long: The Martin Lewis Podcast is here. Founder of Money Saving Expert, Martin Lewis answers your questions on buying national insurance contribution years to top up your state pension. As the buy-back deadline is fast approaching, Martin has an urgent plea for those aged between 45 and 70. They could be missing years off their state pension worth £1,000s, so check yours and your family and friends now. Elsewhere in the show, why Martin has written to the chancellor to call for April's planned rise in the energy price guarantee to be scrapped. The average bill is expected to rise from £2,500 to £3,000 if the cap is amended.

He called on Chancellor Jeremy Hunt to halt the cap increase, saying it is no longer necessary because wholesale energy prices have "come down very substantially".

Producer: Isabelle Tudor