We spend between 80 and 90 per week, all organic, free range meat and dairy, organic veg on the whole. I get all meat and dairy from one farm shop and veg from another, tins etc from whatever supermarket I am passing...aldis is great value.
I meal plan for the week but the dinners can swap around if needs be, and before I shop I check for ingredients in the cupboard. We tend to stick to: home made pizza Sat night, roast on Sunday, something with roast meat (shepherds pie etc) on a Monday, soup on Tues, something with mince or whatever on Wed, veggie (pasta jackets, whatever) on a Thursday, fake take away (or a real one!) on a Friday. All home made from scratch. We have hens for eggs and I make bread, flapjacks, cakes etc.
We don't buy squash, biscuits, crisps etc on the whole...kids drink milk water or juice. Neither of us drink alcohol.
We don't have to stick to a budget, but that tends to be what we spend. Breakfast is a full English at the weekend, then either oats, porridge, home made granola, toast or eggs of some variety. Lunches are leftovers for DH if he works out of the house, or omelettes, pasta, sandwiches etc. I always take packed lunches and snacks, fruit out when I take the kids out, have reusable bottles so don't buy new ones.
We are two adults, two kids and a dog.