I think we spend about £85-90 a week. Four adults and four dogs. That includes toiletries, food, cleaning and food for 2 of the dogs. We buy our own booze out our fun money if we want it.
I do a big Tesco online shop about every three weeks and then buy bread, milk, pop and fresh produce from Lidl. We've got two freezers which helps a lot as I can stock up on bargains.
My husband takes leftovers for lunch which cuts costs. I make an extra portion of whatever we have for dinner, and then he heats it up at work. My son gets fed at work and I buy value cheese and onion pasties for my daughter's lunch.
Two of us are veggie so we buy very little meat which also helps I think, although quorn isn't exactly cheap either. I mostly buy frozen veg as there's less waste as it doesn't go off. I will buy a huge pork joint and roast it for one meal and then the rest will do say curry, sweet and sour, pulled pork, and carnitas. So for £7 I've got meat for 5 dinners for 2 people.
Meal planning makes a huge difference to spending. I don't do it rigidly, but I have a list of about 14 dinners which everyone likes, and I check when I'm shopping that I have all the components for those.
I've also spent much less since I started shopping online, as I have more or less the same list every time, and there's no temptation.