Sorry oldspice, not meaning to offend but I think even you would be shocked at some of the girls that live in NG3, I know I am as I have never come across it before.
The young lady at No36 for example... She has 2 children already and has just had another about 6 months ago and she's pregnant again.
Theirs such a thing a contraception and while it 'does take two', both partys can take precautions and these are free, no excuses, she is a career baby machine and she aint the only one, the country is littered with similar examples and I am sure you will find some near to you.