I presume that you know their web site....
Go and look at the white paper for the family, the general tone is quite shocking but in particular look at the bit about bringing in a "married man's tax allowance". There won't be one for women, so it will encourage the woman to stay at home rather than the man.
There's then some other bits about the removal of housing related benefits for single mothers, unless they were married and are widowed (so I guess that also applies if the husband ups and leaves them).
I don't think it's in that document but they've also spoken about removing the anonymity of rape victims.
If you're interested about what they would do to homosexuals well they want to stop civil partnerships and take away their right to adopt.
And this is just the stuff that they admit to during a time when they're moderating their language so as to not appear too extreme....
Oh and there's another similarity with Islam4UK, they both want to change our societies into something intolerant, sexist, racist and homophobic.
So it's not so much changing our society that's the issue, once again it's the colour of the skin of those who want to change society...