Captain Flasheart, that's an impressive cellar if ever I saw one. I'm betting it's not yours, if only because you don't strike me as the sort to be so vulgar as to post a pic of your own cave. We'd be fine for wine until the summer, though drinking some of the bottles we have laid down would be a last resort.
As for food, went to Farmer's Market yesterday so OK for food for a week or so if it comes to it but can just about walk to M&S so unlikely to starve. 😉
I did fill a bucket with grit when I walked round to the local shop and saw the cooncil had just filled a grit bin, about half of it has gone. Most on the right angle corner by our house, a smidge on the drive and step. Still got half a bucket for emergencies.