You don't have stop buying the things you like, when you can hunt for vouchers and coupons which let you buy them for less. This isn't an excuse to buy things you wouldn't otherwise consider, but it's a nice way to shave £5 off the weekly shop without changing what you buy. Likewise when you're buying anything online, before you hit the checkout, do a quick search for the name of the shop and the word 'voucher'. There are a host of websites dedicated to sharing details of current vouchers, so you could find yourself saving 10% without trying.