We spend around £80 a week total for 5 of us(2 adults and 3 dc aged 3,6 & 8). The dc are home ed so includes lunches and DH takes food to work with him most days too.
I keep our supermarket shop around £55/£60 by meal planning, I look to see what’s on offer first in case anything jumps out at me. I also look at what we already have in. We don’t have much food waste, any veg I have leftover ends up being blanched and frozen or I make into a pasta sauce or whatever. Brown bananas will go into pancakes or banana bread etc.
I shop online so I can keep an eye on what I’m spending and am not tempted by random things(I am terrible in Aldi/Lidl for picking bits up in the middle aisle).
I mostly buy non branded stuff, there are only a few things I will always buy the branded version(tea, cheese etc) of. Some supermarkets do great products, Asda sell a superseded loaf of bread for 84p and it’s lovely.
Stuff like toilet roll we buy in bulk, we pay £11 for 56 toilet rolls and that lasts ages.
Our meat is from the butchers. They do 5 items for £14 so I buy that and sometimes will add extras like this week I added some chicken kebabs in a marinade so it was about £20.
It probably would be cheaper to get it from the supermarket but the meat is so much better, no fat or nasty bits.
Then I do a top up midweek of bread/milk and some fruit which is about £5, sometimes I will pick up reduced bits if I see them to pop into the freezer.