Update for anyone who knows, cares and/or has been waiting on tenterhooks since this thread (esp Annie75 ).
24wk arterial Doppler to check for placental sufficiency, intrauterine growth retardation etc was utterly normal.
Professor is indeed a intelligent and reasonable fluffy bunny of a man with endearingly frayed labcoat.
Was livid that his junior registrar had left me so misinformed and will take her to task.
Agreed that we shouldn't go looking for trouble (as it were) but should make decisions as and when need arises
ie he sees no need yet to commit to a fully medicalised birth.
Would like me to be in hospital though but tbh that I can live with.
Feeling 600000 times better about the whole thing and am taking his advice to meet each stage as it comes and see what nature throws at us rather than stressing about what's not here yet.
So thanks for all your support - the emotional crisis (if not the obstetric one ) appears to have passed.
[MrsBadger skips merrily off into the sunny afternoon towards the leftover easter eggs]