I had an IM and I won't be doing it again.
I would say if you intend to take this route pick carefully.
I was fearful that DS1 would be stillborn as we have a family history of that, and the IM seemed like a good way to get extra reassurance. Indeed initially I wanted a homebirth with my IM. My mistake was to trust her completely, this was a mistake as both me and DS1 were lucky as we had some close brushes.
She gave me a sweep at dd+7 and asked me to tilt my pelvis. DS1 rolled out and turned posterior.
I waited until dd+17 to be induced, and trusted her implicitly. However with hindsight, as he was now posterior, he couldn't get down low enough to be born and this put him at risk.
She was with me in the hospital but sat in the corner reading a book and occasionally giving me arnica, she failed to notice along with the locum midwife that my IV had blocked which was why my labour stalled for 8 hours.
I received no birth coaching from her, despite paying more (her fee was £4250) to attend her classes of which only one other couple attended once. She promised me the antenatal sessions, but never gave them.
I was woefully underprepared for induction and accepted pethedine and epidural which damaged my bladder and left me unable to pee properly for weeks. In fact, it was more painful trying to push baby past catheter balloon than any part of the labour itself.
I just felt abandoned and as if she was completely detached from me in the labour. No-one noticed my waters had broken, no-one listened when I had the urge to push, my waters broke underneath me and I was sick. Instead I was encouraged to keep still for the epidural and told I would not be able to not push if he was ready to be born. I felt his head touch the bed between my legs the urge was so strong, but the epidural was done and labour then stalled again.
Eventually in the morning a new NHS midwife was assigned who replaced the locum and also worked at the hospital. Her care was excellent and she carefully corrected all the mistakes, got the dosage of the drugs right and to work, and got the botched epidural fixed. This helped me relax.
Realising just how good those NHS midwifes were has given me the confidence to go with the hospital again for DC2. As I had the 3 day induction nightmare, I won't be too timid to ask that I always have a permanent midwife with me and not a locum, and will ask for a midwife I'm not comfortable with to be replaced.
Good luck with your choice, I am sure if my labour was straightforward I would have been happy with IM. However I'm not sure I would have trusted this one to realise if there were any problems.
I don't think she practises as a midwife any more, so no need to worry about booking her.
I'm going with my Mum and a Doula next time. PS Mum arrived towards the end and gave me the confidence I needed and the reassurance, which was amazing, especially as she's squeamish too!