There are Boar in many areas of Kent, but the largest population is on the Kent/Sussex border near a village called Peasmarsh. The population figures I have been told is in excess of 400

this is information given to me by a guy who has studied them since they arrived after the hurricane in 1987.
People do shoot them in the area, but it is tied up and the vast majority of Boar are in a forestry wood, and also Mr Paul Mcartney also has a large area right in the middle of it all!!!
There are also Wild Boar near Ashford, the nucleus I believe originate from a private zoo nearby, however these have hybridised with all sorts of pigs, and they are not pure bred.
Across the greater part of the Wield of Kent you might come across Wild Boar, although to my knowledge they are thinly spread in some areas.
Defra will have serious problems trying to eradicate then if this is the course of action they choose

In my mind its too late for that, and I for one hope they increase, I have them on my ticket for 3 calibres I own, and I look forward to meeting up with one soon.