Recession Buster Challenge. In 2013 I took my top four items of expenditure and reduced my outgoings by a massive £4129 a year. Simple, step by step guides to saving thousands of pounds a year on your mortgage or rent, weekly household shopping bills, energy and vehicle insurance bills. Bonus sections on how to budget, and the best way to purchase your own home. Actual worked examples: How to save £5386 a year on a £250000 mortgage, how John reduced his rent by £215 a month, how I reduced my weekly Tesco shopping bills by £2125 a year, how Mr Brown reduced his gas and electricity costs by £256 a year, and how Steve reduced his car insurance from £244.36 to £93.19 a month. Tips, suggestions and website addresses. Simple, easy to understand guides that will save you thousands of pounds a year for life.