"I wonder if you're referring to St. Thomas'? I'm due to give birth there any day now."
Isn't that funny - I was thinking of tommies! I've spoken to several people who've had epidurals there where they've been left with enough sensation to change position - get on all fours to push etc.
"I don't see what is wrong with having a continuous drip or continuous fetal monitoring??~"
People who don't want a ctg generally feel that way because they don't want to have their mobility hampered in labour. It can be very difficult to move normally with a ctg on - the pads slip and lose the trace. For women without an epidural this can feel like torture as being upright and mobile is the main thing that makes most labours bearable.
As far as CTG goes - if you're labouring without an epidural it's not recommended (according to NICE) because it results in a higher c/s rate, without improving fetal outcomes. That's because it picks up so many false positives.
Different situation with an epidural, because of the frequent use of syntocinon to augment the labour, which can result in stronger contractions (which of course you can't feel, but your baby can). When you start to disrupt the normal process of labour - which is what you're doing with an epidural, a mum needs really good one to one care and lots of monitoring to keep it a safe birth.
Some women will be offered internal monitoring by the way, if there are problems getting a decent trace with external monitoring. This is when they clip one of these to your baby's head: <a class="break-all" href="http://www.google.co.uk/imgres?imgurl=www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/9324.jpg&imgrefurl=www.nlm.nih.gov/medlineplus/ency/imagepages/9324.htm&usg=__bCQT3qSgLRK6hAyftNuNjndvl_Y=&h=320&w=400&sz=16&hl=en&start=0&zoom=1&tbnid=9nx3wcLlY_MhqM:&tbnh=137&tbnw=171&ei=M8X9TeW1O9Ddsgac4cDwDQ&prev=/search%3Fq%3Dfetal%2Bscalp%2Belectrode%26hl%3Den%26biw%3D1280%26bih%3D871%26gbv%3D2%26tbm%3Disch&itbs=1&iact=hc&vpx=128&vpy=83&dur=195&hovh=201&hovw=251&tx=120&ty=139&page=1&ndsp=30&ved=1t:429,r:0,s:0&biw=1280&bih=871" rel="nofollow" target="_blank">here . It attaches by means of a thin wire which punctures your baby's scalp.
"But my aim is for a calm and happy birth resulting in a healthy baby so unless it directly and negatively affects those aims...."
Yes - birth with an epidural is usually fairly calm and lovely. But whatever USHY says about research on the continent, the research used as a basis for NHS guidelines here shows an high level of association between the use of epidurals in first time mums, and assisted deliveries. Also higher levels of assisted birth among women giving birth in obstetric led, rather than midwife led units, or at home. The rates will vary though from hospital to hospital and midwife to midwife. Some midwives are very skilled at delivering babies when the mum has had an epidural, and have much lower rates of ventouse and forceps than others.
If your baby is born by ventouse or forceps they may have bruising and swelling to their head or face. They may be more likely to experience jaundice in the first week of life. None of these things have implications in the medium or long term, but it's not nice to feel that your baby has been damaged in any way by your birth. I speak as someone who had a forceps delivery whose first baby looked a bit like this when she was born: <a class="break-all" href="http://www.google.co.uk/imgres?imgurl=www.i-am-pregnant.com/images/assisteddelivery2.jpg&imgrefurl=www.i-am-pregnant.com/encyclopedia/Birth/Assisted-Delivery&usg=__4Zabociw7vP9cRAuV6JvW5FHXQs=&h=330&w=417&sz=20&hl=en&start=121&zoom=1&tbnid=yjAXViwOAjfyXM:&tbnh=153&tbnw=217&ei=nMn9TczbDYjFswbW0YDwDQ&prev=/search%3Fq%3Dforceps%2Bbruising%26um%3D1%26hl%3Den%26biw%3D1264%26bih%3D855%26tbm%3Disch&um=1&itbs=1&iact=rc&dur=356&page=6&ndsp=20&ved=1t:429,r:16,s:121&tx=99&ty=50&biw=1264&bih=855" rel="nofollow" target="_blank">here
You're also more likely to have an episiotomy with an epi than you are without, which is associated with more painful sex than a perineal tear of the same degree.
As for which information you can trust about the pros and cons of epidurals - I personally think you'd be more sensible to give weight to NHS patient information, which has been written and reviewed by UK doctors and midwives, than listen to someone on the mumsnet who is getting her information from googling individual studies from various non-uk sources and who clearly has an agenda.
nhschoices
Would point out - that when it says there's a 'slight' increase in the rate of assisted deliveries - you need to separate out first time mums from second time mums. Second time mums have much, much lower rates of assisted birth with an epidural than first time mums. So overall it's slight, but for first time mums it's not.
I'm not trying to put you off having an epi by the way - I think they can give you a happy birth and it's good if knowing you can have one makes you feel more relaxed about your labour. But you need to be straight about the fact that it's an invasive medical procedure which disrupts a normal physiological process. As such it will have benefits and risks - some rare, but serious.