The Nature programme on Radio 4 today was about the Sika deer in Purbeck/Studland and covered a good part about their management.
I thought that it was a really good piece, quite positive about the need for management by culling. Worth spending 30 minutes to listen to.
It isn't on iPlayer yet, but it is repeated at 21:00 Thursday 3rd May, so will probably be available after that.
This is the link to the Nature page http://metagoogle.net/programmes/b01gvn21 ( This is not a trap; I know that URL looks a bit odd)
A deer stalker for the National Trust said "There's nothing nice about shooting a large vascular beautiful mammal." Any volunteers to unload this terrible burden of responsibility from the poor chap?