Uh oh, major rant time...!!
I am very firmly of the opinion - from my own ongoing experience - that mothers with buggies/prams/pushchairs are as a general rule amongst the rudest, least co-operative and most ignorant groups of passengers that we have to encounter/endure in our line of work. That doesn't apply to them all of course, but those to whom it does apply stand way above the crowd.
Many a time I have had confrontations with lazy, aggressive women having done nothing more than politely asked them to fold up their pushchair, and had a response of the sort I might expect if I'd asked them to leave the baby behind at the next stop! The need to 'fold' is invariably blatantly obvious, as the train concerned is generally full to capacity, with their buggy wedged sideways across a doorway or aisle, preventing others from leaving/joining the train or helpfully providing us with an injury waiting to happen. I will always try to make it clear prior to boarding that the service is full and the buggy needs to be folded - despite this generally being very obvious to anybody with half a brain and any sense of consideration for others - and get sick and tired beyond belief of then walking through the train to find that, despite previous agreement to ensure they were able to board the service, there was clearly never any intention whatsoever to actually comply with the instruction.
One recent instance sticks in memory; a particularly rude and generally unwelcome member of society offered the usual reluctant agreement to fold up the pushchair while still on the platform. On departure a very clear P.A. was made specifically advising (again) those with buggies that they would need to be folded of they were obstructing an aisle or doorway. On taking a stroll through the train I encounter the afore-mentioned individual, who had taken the child out of the buggy, but neglected to fold it. I again repeat my request, again recieve a vague acknowledgement, go to deal with the next station stop and return to find that she has placed the kiddie back into the pushchair, in order to very smugly tell me that she couldn't fold it now because it's no longer empty. Grrr.... One then has to stand their in playschool teacher style, supervising these brainless idiots until the required buggy shuffle is complete, all the while enduring snidey and mildly abusive comments to the effect that this is clearly the first time you have ever encountered a child before...
I've said many times at the usual meetings and briefings that what is needed is a mandatory 'buggies must be folded' policy, advertised and clearly announced at stations and suchlike. Guards could then use some discretion when needed. No progress yet, but I'll keep telling 'em!!