I just did a Lidl shop and spent £80 and I thought that was excessive - it was for 2 adults and 2 kids aged 4 and nearly 2. Included nappies but the only alcohol was 2 bottles of beer. I got enough food to last us for 10 days easily (apart from milk and salad that goes off) - went a bit overboard on the fresh veg, so I hope it doesn't go off before we can eat it all.
Lettuce x 2, tomatoes (cherry and beef), neep, celeriac, cauliflower, peppers, mushrooms, carrots, aubergine, potatoes, chillis, fresh coriander, Cheerios, honey, bread, croissants, cookies, biscuits, Haribo x 2, Greek yoghurt, cheese, feta, ham, mozzarella, prawns, smoked mackerel, chilli peppers stuffed with cream cheese, 6 x tins tomatoes, chickpeas, white beans, 4 x mini pizzas, fishfingers, 4 x haddock fillets, mince, chicken thighs, pork loin steaks, tomato puree, flour, nappies, 2 x beer, 2 x butter, Lurpak spreadable, milk, BabyBels, a Frozen magazine for DD, box of Ferrero Rocher. Think that's it - might have forgotten a few things. Meal plan - hm fish and chips (plus leftover fish for lunch), spaghetti bolognese (for 2 nights), tandoori chicken and split pea dahl, veg soup, pork steaks with bean mash, chicken Caesar salad, hm pizza. Lunches - Greek salad, prawn cocktail, ham sandwiches, mackerel salad, soup. There's at least 2 extra meals in there - say roast Mediterranean veg with mackerel or baked potatoes with cheese.
We eat meat most days and were spending much less when we did Muscle Foods orders. Give that a try, OP - lovely organic meat, the nicest steaks I've ever tasted, delivered to your door at Lidl prices. It really is brilliant - I must get back into it!
The other thing that costs money, is, sadly, overeating. I'm not trying to be judgy here - I know this from firsthand experience! But DH and I have gone through phases of being overweight (I am about a stone overweight and DH is more like 3 stone) and overeating really costs us in financial terms. I don't know if this affects you/your DH, but it's something to think about if you are actually consuming £220 worth of food.
Are you counting clothes in your budget? I don't know if Ocado do clothes, but I found that chucking a packet of baby vests/socks/a cardigan for me/a T-shirt for DH in the trolley makes it seem like you're spending a lot on food when really some of it is clothes. Ditto kitchenware/books/electronics/toys etc.