Me and DH always have a stockpile of everything, as we live in a village in the sticks with absolutely nothing here except a pub, and a Church. And our diddy little local town (4 miles away,) is always the first to run out of stuff, and the last to get it back in. So if we had been 'quarantined/self isolated' 2 weeks ago, we could have survived for several months (probably,) with the supplies we have.
Plenty of loo rolls. kitchen rolls, washing up liquid, washing powder, coffee, coffee mate, tinned food, frozen food, (pies/ fish/ veg/ pizzas/ garlic bread/burgers/various ready meals/chips etc,) and lots of packet stuff, (pasta, spaghetti, rice, etc...) as well as various jars of stuff, and talc, shampoo, shower gel, you name it. And we always have 3-4 boxes of cat food in. And lots of dry cat food. We also have lots of stuff in the fridge... yogurts, butter, cream, condiments, onions, fresh potatoes for baking, cheese, etc etc...
The only thing we would run short of is bread, salad, and milk.
But yeah, being rural/living in the sticks, does make you get into the habit of stockpiling.
I have also not seen the same kind of hysteria in the midlands, that I am seeing on the news (and hearing about.) Where are the areas where it's happening?