I'm a prepper. But nothing to do with Brexit. I've been a prepper ever since Storm Desmond. We were one of the towns with no power nor telecoms for a few days.
Having seen how utterly ill-prepared and incompetent the utility companies, local authorities, and emergency services were in the first couple of days with no power and no telecoms, I vowed to ensure that we would always have enough food and water supplies to last a week or two.
Luckily, I was already the kind of person who has a few "extras" in the cupboard as I don't like to find myself caught without anything, so we were fine for the 3 days it took before limited power was restored (on/off all day as the generators kept tripping out) and shops started to re-open, but it was a close thing.
First thing I did when things were back to near normality (7-10 days later) was buy a camping stove, a couple of cool boxes, an extra freezer for the garage, several torches, a box of candles and a couple of new bikes. They all get used anyway, but now we're a lot better prepared for if it happens again. I've also been buying more non-perishable food, toiletries, medical supplies, etc - nothing extreme, just the odd extra packet so, say I have two packets of corn flakes in the cupboard instead of one.
So, I'm ready for any short term Brexit disruption, but I've done nothing different from last year or the year before. I'm just a prepper anyway.