Food hasn't been a problem. Local suppliers have delivered fresh items and I've managed to get two Tesco delivery slots for everything else. I've become quite creative with using up what turns up in my veggie box. I only wish I had a bigger freezer. My own little garden should start producing most of my veggie needs in the next few weeks.
The only "essentials" I've bought have mainly been techie stuff. I had to buy a videocam/microphone to carry on with my business. I also bought a new computer keyboard and mouse because most of the letters had worn off my old keyboard and my touch typing isn't that good. I'm about to buy a new printer/scanner/ copier because my existing one is making very ominous noises and I need to be able to scan and copy for work. I had to buy some diabetic testing strips, but apart from that, I don't think I've bought anything.
I hardly ever have any spare money anyway, so I can't say the current situation is making much difference.