The Martin Lewis Podcast is here. Founder of Money Saving Expert, Martin Lewis answers your financial questions, including several queries on upcoming changes to student finance. Water bills could rise by 7.5% from April for households in England and Wales - the largest increase for nearly 20 years. The industry body Water UK says the rise due in April could take average water bills to nearly £450 a year because of rising energy costs. Martin shares all the hidden savings you could make, potentially saving thousands. Elsewhere in the podcast, you Tell Us what single action you have taken to save, not earn, the biggest amount of money in one go. Nihal takes on Martin’s Money Mastermind and is quizzed about whether non-taxpayers get tax relief if they save into a pension. Plus Martin has updates on cost-of-living payments for those in park homes or using heating oil or LPG. Producer: Isabelle Tudor