Downshifting:The Bestselling Guide to Happier, Simpler Living Polly Ghazi and Judy Jones
This is the first book I read on downshifting and I think it is probably still the best general introduction.
Downshift to the good life Lynn Huggins-Cooper
This is a good book to pick up and put down easily, as the information is delivered through 52 very short chapters, or 'ideas'. Also lots of quick hints and tips.
Money and Living on a Budget
I took a lot of my advice on creating a budget, etc from Martin Lewis's website, Money Saving Expert, which is constantly updated with the latest information, although I understand he has also written some very good books on the subject.
Thrifty Ways for Modern Days (edited by) Martin Lewis
This book is a collection of ideas for living better on less from the 'Money Saving Old-Style' section of the chat forum on the Money Saving Expert website. Lots of tips across the board for saving your cash from cleaning to home-made presents and gifts.
Smart Spending with Jane Furnival
This book is based on the author's own experience after the newspaper she worked for went bankrupt, owing her a shed-load of back pay and landing her in debt. It is full of advice on how to get the best deal for everything concerning cash peppered with helpful hints and web addresses for further research.
The New Spend Less Revolution:365 tips for a better quality of life whilst actually spending less Rebecca Ash
I love this book. It made me realise that working to a budget could be an exciting challenge instead of something to be endured. Having addressed that perennial issue of why we always feel so hard up all the time it goes on to give solutions and tactics to make your money go further.