This is my local Health Authority and, regardless of details of this particular case, we're still in the Dark Ages with regards to any 'alternative' pain relief.
Home births have a very low takeup (usually only happens by accident when an ambulance fails to arrive in time), the attitude is quite medicalised (you have to fight your corner not to be strapped to a bed with some MWs) and if you uttered the phrase 'midwife-led birthing centre' you'd be burnt as a witch !
Maybe the patient was high on gas and air, but you'd like to think that nobody would be dense enough to drink it!