Daisymoo - the social responsibility rules are a lot more complex than that.
They cover promoting responsible drinking and implementing the ?Sensible Drinking Message?.
Avoiding any actions that encourage or condone illegal, irresponsible or immoderate drinking such as drunkenness, drink driving or drinking in inappropriate circumstances.
(which I think you would agree, would probably be where the incidence of pregnancy would fall)
Then there is of course, underage drinking, marketing to inappropriate groups (ie, underage), avoiding dangerous, illegal or anti-social associations, making sure it is clear what is alcoholic, making sure there are non-alcoholic drinks at a reasonable price, not promomoting the effects of alcohol, ensuring staff are fully trained in the effects of alcohol and can apply their knowledge applicably.. there are more, but you can see where I am going.
Its not just about protecting children and drunks. It is a very wide spectrum, and has led in part to a complete rewrite of the licensing act, which comes into play in September.