I think the tories could copy the Chinese Birth Policy similar to those first introduced by Mao in the 50s and others at later periods.
Also, they could go in for more selective abortion, or would that go against the principles of family and marriage.
I suppose infanticide could be added to their repertoire of social manipulation, if all their other policies were seen to be failing.
Perhaps, these policies will be in their next manifesto, which will of course pander to the more moderate right wingers before the next election.
( A little sub-note, all these policies will be revised, and announced as U-Turn policies, if "we" ever get into power again. Maggie will be resurrected and state that she is due for turning.)
Should be an interesting election.
For those who can't remember Mao and his followers, they weren't the right wing of the tory party.
http://iml.jou.ufl.edu/projects/fall07/Henneberger/History.html
Education, contraception, rising economy better social conditions seemed to be more influential, than beating the plebs with the whip of social deprivation.