I know using a local butcher is great and a lovely idea and all but if you want to save money then do a price comparison for the meat you get from them.
Unless they can price for price match a supermarket then only use them for special occasions.
Online shopping saves me a fortune as they have a lot of special offers so I can stock up on tinned toms, kidney beans and chickpeas for normally 4 for £1.
GO OWN BRANDS!!!! or cheaper brands... search, search search.
I go through the cupboards, fridge and freezer each month to see what I'm running out of and make a list.
I have a set amount to spend and add things and remove things over several days until I'm happy :)
I get cheap whole chickens for under £3 and a 1kg bag of chicken boobs for £3.50 from Tesco.
The chicken gets smothered in garlic salt and pepper and a cheap onion up it's bum. Comes out lovely. or I will cut them up and use the legs in stews, pies etc.
All the bones and uneaten bits from a cooked chicken gets bunged in a pot to make a nice stock as you can pick a ton of meat off the bones :) :) (I add in bendy veg and a chicken stock cube as I like a nice robust flavour)
Chicken boobs I use in so many meals.
Also chicken thighs are cheap as chips as well and I use them in a ton of recipes (mmm.. chicken stew full of cheap veg)
Cooking bacon is really cheap and I use it in chicken pasta baked dishes. You sometimes get a HUGE lump that you can cut into decent chunks :)
eggs are brilliant for making spanish omelettes using any veg that needs using up.
Also I part cook my omelettes in the pan then finish them off under the grill, they puff up lovely and makes it seem you are eating more than you are.
A bag of cheap 20 sausages are about £1 and are lovely in a sausage, tinned whole toms and tinned bean casserole to fill up hollow tums.
For puds cheap ice cream (99p to £1.50 for 2 litres) and tinned broken madarins (about 45p a tin I think)
Look at the veg you buy. It can be cheaper online as well (1kg carrots 49p, cabbage, 49p, leeks, 99p, 2.5kg all round spuds around £1.50)
Also I use their cheap beef mince and it makes a lovely slow cooked ragu for spag bol or cottage pie (filled out with loads of mushrooms, frozen peas (99p a large pack) carrots and other veg I can sneak in)
Dont use cook in sauces.
Easiest tomato sauce is slow sweat an onion til soft, add in a crushed garlic or two, add a couple tins of cheap toms, a bit of sugar and salt and pepper and simmer for about 30-40 mins then whizz it all up.
You can vary the taste by adding spices you like. I love adding a GOOD squeeze of malt vinegar and tablespoon of sugar. Really nice flavour.
Look at what your family likes to eat and then just use cheaper ingrediants.
I had to cost cut due to money issues and I was amazed at the amount of stuff we wasted.
I also set a budget for snacks etc. Once they are gone they are gone. Boxes of broken biscuits are really fun and cheap (Iceland sell them)
oh! and Tesco cheap pasta! OMG! 20p anyone for 500g of spaghetti or 29p for 500g of pasta tubes?
The tubes make excellent pasta bakes!! and the spag, once covered in a slow cooked ragu (or even just a bit of butter, cheese and black pepper) tastes REALLY good.
Oh OH! Cheese... if your family get through a load of cheese look at my partner you can get HUGE blocks of cheese cheap as well (mature). I add it to loads of things.
sorry its a bit long :)