It was one of your "rip off their goolies" posts that got me looking for evidence that this didn't work.
I was surprised to find that castration has been very sucessfull although not completely - the surgical approach has been best with a worst case of 10% recidivism
http://www.jaapl.org/cgi/content/full/33/1/16/ T2
As for the voluntary aspect - yes it would have to be and yes it is basic human rights.
You know guys there was a regieme 60 years or so ago that went in for forcible sterilisation on people - I really don't think we want to go down that road!
I think it's really amazing that the government is actually going to do something positive that will actually have an effect of sex crimes and you cannot find it in yourselves to actually say that it's good, you have to try and makeomething bad out of it.
Had Margaret Thatcher introduced it you'd have praised it to high heaven which makes me think...
Have the Tories decided to support it or would that involve having a policy on something?