The men are perverting the course of justice. The woman, too, if she gives a statement to the police and doesn't tell the truth (though she'd likely get a lesser sentence by far in the circumstances). But you've got no death. As far as I'm aware, it's still the case in English law that the foetus is legally not a person, so the baby's death doesn't amount to killing under the relevant provisions -- as David has noted the law was then in his state.
Penalties depend on the offence and what mitigation can be brought. As I've said, a momentary loss of concentration is one thing, driving recklessly ie 90mph in a 30mph zone, or under the influence of drink or drugs will result in higher charges and higher sentences.
Penalties depend on the offence and what mitigation can be brought. As I've said, a momentary loss of concentration is one thing, driving recklessly ie 90mph in a 30mph zone, or under the influence of drink or drugs will result in higher charges and higher sentences.