Cleaning products - elbow grease goes a long way
toiletries - how many are really needed ? Loo roll , bars of soap are better value , try to get out of habit of washing and conditioner on hair every day ( or every time you wash it ) if your hair is dry skipping (edit) shampoo sometimes is better for it
vegetarian in the main
Porridge for breakfast with cheaper fruit like apples or frozen fruit
simple sandwiches for lunch - peanut butter, marmite , jam, eggs - don’t buy the protein hype
egg chips and homemade coleslaw ( carrots cabbage and onions are cheap)
or add cheese ( a little) and walnuts to the slaw on jacket potatoes. Cook up apple crumble at the same time to make efficient use of oven
homemade chill - tin baked beans, tin or two of tomatoes, tin another bean type, carrots, onions garlic and chilli
couscous with a block of feta and some frozen broad beans and salad bits. Half a jar or olives or sun dried tomorrow.Use paprika or a herb mix in the couscous
hamlomi burghers with mushrooms
it’s about £20 per day for food or £4 per person so it will be tight but keep the breakfast and lunch cheap to make diner more exciting
and sit down with your meal plan and cost out every meal you are making