For my first son I booked with a birthing centre, like yours a reasonable distance from a main maternity hospital.
It was a great experience during the labour, wonderful midwives, birthing pool, no drugs, music etc...
Unfortunately when it came to pushing him out - after 3 hours he got distressed and I was transfered to hospital by ambulance, flashing blue lights, then crashing through doors into a delivery room. Very shortly afterwards after episiotimy and ventouse he was born. I was in shock basically, I believe alot to do with the extreme change of environment and how completely out of control I was. As soon as I got into the hospital environment I was demanding drugs (which I didn't get by the way!) even though I had laboured for 15 hours without!!!
I do not regret my decision to choose a birth centre for my first birth as I really did have a wonderful labour - it was just the end that was totally awful.
I decided with my second son to have him in hospital, had an epidural - 6 hours from start to finish. A good experience and I am now expecting my third in March, will be at hospital again.
I just could not face the chances of another ambulance transfer journey and the panic and hysteria I felt.
I don't want to put you off, but first time round I was aware that this could happen but I really didn't think it would happen to me!
Good luck with your decision. xxxx