I've swapped to lidl and am managing to spend £90 per week to feed 3 adults every day (not lunches though) and 1 adult 4 days per week (not lunches)
This include a top up shop in Sainsbury for the bits I couldn't get - so £82 Lidl and £8 Sainsbury
I've come in at £80 for the last 3 shops now - so not a fluke
breakfast is frozen croissants, pain au chocolate, toast and jam or bacon/sausage sandwiches, porridge and fruit
Roast chicken dinner with braised red cabbage, roast parsnips, roast carrots, broccoli and peas, Yorkshire pudding. Pudding was apple strudel and ice cream Bubble and squeak with sausages for Monday pudding was meringues, peaches and ice cream, homemade chicken curry Tuesday, yogurt and fruit, Wednesday Tarragon Chicken casserole (makes two portions so freeze for next week) creme Carmel for pudding, Thursday Pizza and garlic bread, meraingues and fruit with creme fraich, Friday fish chips and peas pudding rice pudding, bananas and custard, Saturday Chilli con Carne.
I do have enough mince meat to make spaghetti bog and I have bacon lardons to make pasta pesto, so each week Im putting extra in the freezer until I have 5 meals for one week
Im cooking for extra as having students staying for 12 weeks and I have to give them pudding - Im spending less feeding 2 more