I raised it at my booking in - the MW was a very experienced one who has qualified to be a supervisor of MWs but not working in that role yet, IYKWIM.
I told her about my awful first experience - crash section under GA, v traumatic, and said I would either go for an elective or HBAC with IM care, not decided yet. She was a little bit offended/disappointed? that I felt IM was the only was to go!
So got to 20 weeks scan, saw bitch consultant, who essentially refused me an elective (well it came down to 'if you come back and grovel in tears AGAIN for an hour in 4 weeks time I might book you one') I phoned the supervisor of MWs, went in and discussed things honestly - ie I know 'technically' I can insist on HBAC but I don't want one if the staff are twitchy/unsupportive. Very reassured that the MWs are proper keen, pro-normal birth etc, and they were.
I even said 'now there won't be any of that we are too short staffed, you have to come in, nonsense will there? Because I don't want a VBAC here when you are fully staffed, nevermind when you are short'
Had MW only care from then, very nice MWs, can't fault it. I transferred willingly after an informed discussion that I was, and am, very satisfied with.
Care in hospital crap as ever but hey ho...