We spend about the same, including most of our toiletries, cleaning products, and 1 bottle of wine a week (approx. £7). 2 adults and 1 child here.
TBH food inflation has been very high over the last few years. I've cut back massively on what we buy, especially meat, but if you cook from scratch and eat enough veg and fruit, then realistically you're looking at a shop that would have cost £80-100 five years ago now being £130-150. Food prices have been on a stealth inflation drive since the financial crisis (for various reasons; speculation in agricultural commodities, profit-chasing by supermarkets etc.).
I see people on MN claiming they spend £50-70 pounds a week, and I think, realistically, they must be eating quite cheap and processed food: there's no getting away from it.
We eat a lot of made from scratch lentil and vegetable stews, pulses, grains, mince dishes, pasta salads and sauces and so on. On average we eat one or two mince dishes a week, 2 chicken dishes and maybe a tuna pasta dish or fish fingers - everything else, including lunch, is veggie/pulses. (My luxury is that I normally do buy a free range chicken a week which lasts 2 meals, but I just won't buy battery chicken or battery chicken products no matter how cheap). We have a breadmaker (given to DH as a gift), and we buy flour etc. in bulk to make bread.
Overwhelmingly I find now that its the veggies and fruit that are the expensive things. I buy on special offers and shop about, but undoubtedly things have changed in the last 20 years and now if you cook from scratch and eat a good amount of veg it is much more expensive than buying pre-prepared food.
Despite all the narratives people come out with about it being cheap to eat lentil stews and poor people don't cook properly everyone in health and public policy knows that the reason poorer people are fatter and less healthy is that it's far cheaper if you don't eat well and don't buy much fruit and veg.
What we need in this country is a complete change in how food is made and sold.