S+P always on the table. I don't season anything I cook but do put sea salt on eggs and tomatoes. Pepper on quite a few things. Enhances the flavour for me.
Husband has salt and pepper on everything. He's no BP problems but gets cramp attacks. Not through dehydration/exercise. As well as salt on food he will drink a salt solution when in absolute agony with cramps in both his legs as well as a magnesium spray/rub, which helps slightly.
To think that London, or anywhere else for that matter, does not belong to any one demographic