I could last for a couple of months, not a prepper or anything like that but I like to be able to look after my own sh#t. People depend on the modern world too much. Have a loft full of home brew, plenty different meats in the chest freezer(which as we know can be replenished without going to a shop), frozen veg/tinned fruit if needed, some bottled water. Enough gear to bake bread for months, plenty dry goods on stock. Candles, gas, stoves, warm clothes etc.
A lot of people would completely fail in a prolonged period of difficulty