My average spend varies quite a lot depending on what I have in, but my lowest spend is about £100 per month, highest about £200 per month. This is for myself, DH, DS1 (3.4), DS2 (12 months) & DCat (no special diet), for food, nappies, cleaning products, cat food etc. DH takes a packed lunch to work every day, DS1 has all 3 meals at nursery 2 days per week. We don's smoke & have a bottle of wine probably about once a fortnight (just got out of the habit when I was pregnant/breastfeeding & found we don't particularly miss it).
I do tend to buy a lot of value brand goods & most are as good as store's own brand (particularly the Sainsbury's basics range), just not in such pretty packaging! I rarely buy branded products (with the exception of dishwasher tabs!) as they scare me at twice the price of store's own brand!
About once a month, I will head down to Tesco for a bargain meat shop, ie a yellow label reduced items shop! I can generally get enough meat/fish for the month for about £20-25, & we all eat meat or fish most days. I also usually buy fruit & veg & bread (and other bakery goods) reduced. I tend to plan my meals around what I find going cheap, rather than buy ingredients for a specific menu.
I would say we eat well. We eat anything from venison, to sausage & chips, to chicken curry - whatever there is! I like to make a casserole in the slow-cooker about once a week as it is so easy to make & serve at different times (boys eat around 5.30. DH & I once they are in bed), as well as being cheap to make!
We also take advantage of what we have locally & buy a 25kg sack of potatoes from our local farm shop for around £7, which lasts about 3 months. I have put my name down for a whole lamb for the freezer for £90 from a local farmer I met at mum & baby group, too - this appeals to me hugely as I can see where & how the lamb has lived & was born, know that it has travelled less than 2 miles to get to me & it works out hugely cheaper than buying cuts of lamb separately from the butcher/supermarket. We are lucky enough to live down the road from a park which has an orchard, so late summer/autumn will find me & DSes foraging for blackberries, apples, elderberries (have made wine from these!) & plums. DSes love doing this & I can make loads of puddings/jam/wine with the results!