We are 2 adults and one toddler.
I'm not entirely sure on my spend as my shop is spread between the supermarket for dried goods and our butcher, greengrocer and milkman. I imagine it's about £120-£150 a week all in, depending on what sort of week we are having. I could do it cheaper, but I'm a fuss pot and I like things a certain way.
On average at the supermarket I'll spend about £90 but that includes all nappies, cleaning products and a few bottles of beer for my DH (I don't drink).
I spend a fair bit at the butchers, I've been spoilt now by the quality of his meat (stop sniggering at the back there) and I can't bring myself to go back to the supermarket stuff. It doesn't really save me money as I could get more meat by utilising supermarket special offers . . . but the quality is amazing and it's nice to be able to order exactly what I want rather then the pre packaged amounts the supermarket offers which avoids waste. Also my butcher has an excellent record for high welfare/local meat and he even cures his own bacon, which is important to me.
The greengrocers is cheap as chips though, really good value and much better quality then the supermarket. He does more local stuff which is nice as I like to help the farmers in my county.
I could get milk cheaper at the supermarket, but I do like the convenience of having a milk man. We get local milk and eggs at a very reasonable price. I think it saves me money in the long run as it stops me having to pop to the local shop, where I inevitably end up spending more money!
I'm lucky that I live in a somewhat old fashioned community where these resources still exist. I wasn't able to live like this when I lived in a different part of the city.
We were out driving the other day and we saw a rag and bone man with a proper shire horse. My DH commented that it was like living in 1965!