It was me, but it was later proven not a viable option because e.g. (disgracefully) there are essentials, such as feminine hygiene products, which do carry VAT.
However, I would indeed say that none of the items you listed above are essentials, and you should only go out to purchase those if you also require actual essentials, i.e. food for three meals on the table per day. I am certainly working on this principle, my local shop is about 2 minutes' walk away and I often pop down for a bar of chocolate or packet of sweets in normal circumstances, and am refraining from doing so at present because I don't see that it justifies the risk to the shopkeeper of me potentially spreading to him for that purpose. This is doing my waistline a bit of good, but that's not why.
This is what I think the Police meant by checking baskets - not weeding out items, but making sure that the basket did actually contain essentials as well, and having words to suggest they're taking the mick and shouldn't do it again if not.