-use ebay to buy clothes, books, toys etc you can buy used or new.
-do your food shop online, you won't have the temptation of picking extras up.
-swap sky, virgin etc for freeview.
- wash and tumble dry clothes at night, its often cheaper.
- I also wash whites and colours together on short washes,never had a problem.
- swap using the bus/car with walking when you can.
- only use mobile internet when in a WiFi zone.
-make sure you've got proper insulation, you might be entitled to it free if not.
-kettles use lots of energy, only boil what you need.