We go through periods where we look at potential savings, in the last 12 months we made a couple of changes:
Binned Virgin, £75pm, accountant told us we could claim internet through the business from home, so saved from the household bills (although a smaller bill still needs to be paid via the company), we then got Netflix at £9.99pm and I have to say I am pretty impressed, wish I hadn't given my password to half the family though!
We have been in our house for 5yrs now and haven't got a reason to move, so we installed Solar, just over £5,000 for a 4.4KW system, been in 10 months and on average saved us 60% on bills (we set the timers on the Washing machine and dishwasher to take full advantage)
Our local M&S does the reduced food around 6.45/7pm so always have a look if we are passing and freeze any suitable purchases. I dont buy in lunch, just make a sarnie or nuke a soup
I also like my wine, I tend to prefer St Emilion (£8-£12) or Chateauneuf-du-pap (£13-£20), but this is more a request for Bday/Chrimbo pressies, I dont drink as much as you so lasts me a good few months.....If I do find myself short I can always buy decent wine for "clients"......