okay- here goes- don't take this the wrong way?
^Ok this is this weeks meal plan. Breakfast is cereal, at the mo it's the Kellogg's variety pack which is £1 in asda for 8 little boxes, so 4 breakfasts for £1, then they have slice of toast. DH and I have either toast and fruit or porridge and fruit.
Lunch is a sandwich, either ham cheese or tuna on whole meal bread. Fruit. The DC's have in addition cheese, squeezy yogurt and raisins.
Snacks would be fruit, raisins, biscuit (value brand).
Meals this week are - shepherds pie, chicken pasta, pan haggerty(layered bacon, potato, onion, carrots baked in oven with cheese on top), tuna salad (tinned tuna), homemade pizza ( I make the base from scratch and the tomato topping), spag Bol. We only eat dessert on a Sunday, the DC's have a yogurt after their evening meal.
DC's drink dilute juice, water or milk. I don't think we are extravagant. I am not really brand loyal apart from Hellmans mayo and Heinz beans and ketchup. We never get takeaway.^
Those diddly boxes of cereal are false economy- you could get a huge bag of porridge oats- healthier and cheaper- at around a £1 that would last for a week or more. or 1 large box of one type of cereal- they don't have to be variety packs!
Raisins- are you buying tiny little packs or one huge bag and decanting into a pot of your own, or a twist of cling film? Ditto squeezy yoghurt- cheaper to give them yoghurt at home out of a large tub, and fill the lunch boxes with maybe more veggies or homemade flap jack etc. Do they really need a sandwhich, AND cheese, AND raisins AND yoghurt? it sounds a lot and my DCS never starved! I'd be going for a sandwich, 1-2 pieces fruit, and a piece of cheese. Do they eat it all or throw some away?
Does your £100 include cleaning products- are they own brand?
From what i can see, you are possibly over psending by buying individual packs of some foods instead of a large bag.