wish i could but getting the 'legal' permission is very difficult and legislation is a bit confused with feral animals and their legal status/ownershipPerhaps you can "take" a few of the wild boar around this way Nick.
Really damaging the fauna
i have seen the damage caused by feral hogs and as you say it destroys the eco system
sooner or later somebody is going to get killed by these feral hogs - they have already attacked walkers dogs (in fairness dogs were seen as a threat especially with piglets)
each successive generation seems to revert more and more to the wild 'strain'
i know quite a few people who have hunted wild boar in Eastern Europe and they are bloody dangerous beasts - well able to kill an adult if they feel threatened or with piglets
look at the problems with feral hogs in the USA and Aus - they have reached epidemic populations and are destroying entire eco systems
the problem shooting them is that they are built like a tank and need a proportionally more powerful rifle than comparatively sized deer - also most of the hunting is in woodland often with public access like the Forest of Dean so public safety precludes most shooting as with these weapons you need a safe backstop should you miss or the round goes through and through ( backstop would be say high ground within say 100m to stop the round)
these rounds are lethal at over 1 mile!!!! - snipers have used these rounds to kill at over 2500yds!