"Also, I think most sensible people are opposed to abortion being used as a form of birth control - but he specifically said he would not allow it even in instances of rape or incest."
The current law allows abortion in the case of "grave permanent injury to the physical or mental health of the pregnant woman". One could argue, quite legitimately, that being obliged to become a mother for the rest of her, or the child's life, against her will, or being obliged to carry a child to term and give it up for adoption, would both constitute such a grave injury to mental health.
I agree that falling pregnant without having taken sufficient precautions is irresponsible, but I don't agree that, having done so, abortion should be proscribed. Mother, child (and father) shouldn't have to pay over a lifetime for the mistakes of one night.
Also I agree that, at the end of the day, it's up to the woman (from which, anyway, it follows that abortion in the case of an unplanned pregnancy ought to be a woman's right, if she so chooses). In a loving consensual couple I'd hope that the woman might wish to involve the father in the decision but it would still be her choice.