In my area the NHS antenatal classes focused mostly on labour, knowing when to go into hospital and the facilities at the hospital, what interventions may be used, pain management and birth preferences. Didn't cover any of the 'parent craft' stuff like bathing / feeding baby etc.
My NCT classes covered a bit of parent craft.
I found the classes to be fantastic for meeting people - in fact I'm still in really close contact with everyone from my NCT classes - we're all close friends and meet up most weeks. But they sadly didn't prepare me for labour or childbirth - in fact they may have even made things worse as I'd harboured certain expectations in terms of the length of labour, and didn't really know there was such a thing as 'pre labour'. I guess everyone has a different experience though.
LBxx