Culling any and all foxes because one looks ill?? This is the year 2017 and there are groups like the National Fox Welfare Society who should be called first. Foxes have lived on Southmead Hospital grounds, that I know of from when I lived in Southmead, since the early 1970s.
A "cull" is knee jerk panic. Read the headline. Good to see people have protested the move.
This is the 21st Century and some pest controllers are far more dangerous than any ill fox.