Absolutely! That's pretty much what I spend on my family of 5 (me, DH, Dses 10, 7 & 5) - no more than £150 per month & often a lot less. 2 Dses take packed lunch to school.
Meals we often have are:
Breakfast: Cornflakes, weetabix, toast, porridge.
Lunch: Bread/toast with ham/cheese, salad bits, sometimes crisps. Fruit for pudding.
Dinners: tomato pasta, cheesy bacon pasta, cheesy broccoli pasta, sausage pasta. Spag bol, cottage/shepherd's pie. Roasted chicken drumsticks with potatoes & salad. Risotto (ham/bacon, mushrooms, onions, peas, broccoli). Fish pie, hm fish cakes. Eggs, beans & toast. Occasionally fish Fingers, pizza. Beef casserole, chicken casserole. Other bits if I find them reduced.
Then various bits for snacks including cheap fruits (apples, bananas etc), crackers, biscuits etc.
I mostly shop at Aldi, but go to Tesco once a week/fortnight/whenever I can to buy reduced fresh produce- fruit, veg, bakery, meat etc.