Since we moved out of London I rarely see a fox. We had a family living under our shed and the cubs looked very cute playing on the lawn. We lived on a main road with two bus routesplus a night bus and lots of other traffic!
Now I live in a quiet cul-de-sac with easy access to parks, towpaths, railway embankments but have not seen a fox or a squirrel in the area! Birds are more plentiful here than Sth London though. My daughter ,only a few minutes away from me, regularly has deer, foxes, owls, rabbits and squirrels and little mice too, in her garden .
I am not sentimental. If a natural balance is not able to be maintained then I think it is better to take on the role of predator..not to annihilate but to reduce numbers so that the health of the species is improved! Overcrowding causes disease and poor diet..this may well lead to an increase of incidents where foxes prowl into homes looking for food. Surely pest control can lay food for foxes, away from domestic pets, that would either poison or sterilise them.
Forgetting where you left your keys does not mean you are “losing it”