Hi there,
I did a hypnobirthing course and gave birth at Queen Mary. I wasn't following the hypnobirthing method strictly, since it just didn't click with me. But I can tell you the following
Most midwives are not familiar with it.
You can't really arrange anything beforehand, it all depends on the staff on duty at the moment.
Some things I noticed (my birth was without complications and without pain meds)
- you only get to go to the delivery ward when you are more than 3cm dilated, before that you are alone in the labour ward
- there is a birth ball in the labour ward
- once you are in the delivery ward with your birth companion the staff only comes in occasionally to check up on you.
- apart from the tens machine and massage, the staff never offered me any pain medication
- they have a CD player
- you can ask them to dim the lights a little
- they are ok with you being in different positions (all 4 etc) during contractions
- they made me wear two monitors and a blood pressure thing and told me it was necessary because of baby's heartbeat
(I think they just told me that to make sure I would wear the monitors, they were very very uncomfortable and restrict your movement a lot)
- once I was fully dilated they asked me to sit in the traditional birthing position, with an almost straight back and legs lifted up. I tried a different position for a while on all fours and the staff was OK with it. I didn't feel very comfortable like that. I ended up in the normal position and found it to be quite comfortable
- One midwife shouted at me to push and I couldn't since the contractions were slowing, my husband explained to her how I felt and either her shift was up or she was replaced by someone after that.
- All the other midwives were very nice, I had a hard time "not pushing" when I wasn't supposed to and they told me how to do the panting (not really part of hypnobirthig I think

)
- you need to be VERY VERY assertive that they give you the child straight away. They took my baby for about a minute and both me and my husband had to shout at him to bring him back straight away. Again they told us it was because of some important test.
I hope this was helpful, I think the most important part is that your partner knows what you want and can talk to the staff for you, also with some things you need to be assertive.
let me know if you have any questions.
all the best