I'm guessing you get your fresh veg and stuff during the week so my storecupboard/freezer staples are:
Frylight
Frozen veg, green beans, onions, peppers, spinach
Passata
if you shop at Asda grab some frozen garlic, ginger, and chillies
Pasta
Rice plain and Batchelors savoury Rice
Egg noodles
Dried herbs: Herbs De Provence, Sage, Thyme
Stock cubes
Spices: Paprika, Garam Masala, Chinese Five Spice, Garlic powder and onion powder (for SW burgers)
Eggs, eggs, eggs!
I also buy a small sack of spuds from the Farm.
Lentils, Red and Green
Chickpeas
(I don't really like Baked beans but if you do get a stock in)
Tinned spaghetti
Granulated sweetener.