Basics like bedding I have gotten from M&S and Dunelm. Groceries I usually go to the big Sainsbury’s near my flat. Depending on where you are living Aldi and Lidl are also value options. Waitrose and M&S are slightly more expensive. Clothing I like Uniqlo for basics, layering and outerwear for winter, some good basics at M&S as well, Primark for very cheap clothes and you have the usuals like Zara and H&M.

Also Argos for electricals - I had to order a tower fan during the heatwave last June, powerboards, small kitchen appliances, etc. Amazon also has a lot of things that can be delivered next day with Prime