Ems and Joe
I read in a magazine that for first time mothers 40% of home birth end up in hospital - mainly because they can't cope with the pain. This doesn't mean to say that they are wimps (I ended up in hospital myself during my first home birth) but it can be so long and overwhelming (my labour was posterior and I had already pushed for 3 hours when I agreed to be transfered... had to push another 3 hours in hospital without any pain relief but they gave me the famous drip to accelerate contractions).
As for the safety aspect... well first of all you are only "allowed" a home birth if you are a no complication case to start with. My experience of HB was that I had the BEST midwives in the area with me - extremly experienced. 1 of my friends who was transfered because of complications was fine and never in danger though they really didn't want her to continue at home.
I have written on another discussion board on this site that a lot of women (I do not want to generalise) who go for home birth are very well prepared (read a lot, discussed it a lot), know what they want, have good support and have less reason to worry. Based on what I hear of hospital births, staff can be "worried" (maybe because it isn't going fast enough - at home you can take as much time as you want/need/can cope with,...) and make you worry... which is probably felt by the baby. At which point you might get a distressed baby and I am sure you know where that leads to !
I have read several times that HB are as safe as hospital if not safer. But I recognise that not everyone might want to go for one ! and the NHS isn't resourced to have that many anyway as you need 1 with you full time and a second one at the end. I am told that in hospital they might let you get on without one for a while.
P.S. The midwives who do HB on a regular basis tend to prefer it (that's my experience) because it ususally is a much more relaxed and natural affair.
P.S. 2 - still no baby so I am surfing.
Did I mention that I have excrutiating back pain when I walk - hence I want this baby now so the pressure can be relieved (I hope!)