Apparently numbers increased by 130% in the last year
If they ban people from feeding them then they should spread out; the only reason places like Watlington can sustain such a ridiculous density is that they are being fed for entertainment.
The Torygraph, predictably, reports a scare story that they are stealing children's lunches and that farmers and the RAF want to see them "removed" from the Chilterns; obviously many of its readers belong to the shooting fraternity. As they're too weak to kill livestock and are unlikely to get in the way of one of the helicopters from Benson*, there isn't really a case to answer.
*if there were fixed-wing aircraft, maybe a flock of kites could cause havoc with the engines, but these are Sea Kings and the like; the kites clear off as soon as they hear one coming.