Had rather a busy time recently, so have given the matter a passing thought. I have always shopped on a 5 week cycle so I always have a good stock of tins and packets in and I stock the freezer around a 3 month cycle. So food isn't a problem.
I have a wood burning stove as in our previous house, but there we had a large wood shed and bought in bulk every summer. Where I am now, I have only limited wood storage, but will see if I can get some extra in. I have a battery operated radio, but I think my power pack needs replacing. Torches a plenty, just need to check on batteries.
As for water, we, now I, are on the 'vulnerable register and when the hose ban etc was announced we had a delivery of 2 doz 2 litre bottles of water. These have been put aside for emergencies.