I went to the Portland with the General Manager / Hospital Director's contact details in my pocket. I was aware of some of their very poor prior performance a few years back and if there was going to be any slack nursing I was going to freak and kick ass at the earliest opportunity. I am under no illusion that it is run as a business IYSWIM... however I was delighted at the care the three of us received (and I am a tough nut to please), though dw was under special obs (consultant's orders) for ages after her c-s (one on one nursing), so that undoubtedly helped... plus, as her c-s was medically required, BUPA covered nearly everything (the Portland is not cheap !). We added dd to dw's policy immediately at birth and they also covered the (incredibly large) NICU / SCBU bill.
Re: would I have gone there if I knew Special Care services would be required ? Probably not. Not because I don't think they could handle it or I found our experience sub-standard, but I feel the NHS is the place for things to be when a variety of specialists may be needed at very short notice IYSWIM.
We knew our baby might need some extra care as she was IUGR but I think even the consultant was surprised at how small she was at birth (1.94 kilos / 4lbs 4 oz), so the stay in NICU / SCBU was somewhat unexpected.. certainly for as long as 5 days. (I appreciate some SCBU 'visits' last a heck of a lot longer).
Will we use them if we have a second baby? Possibly. We have recently met a couple who lost a baby there (I do not know full details and won't post more on the subject), and this personal contact / hearing their account of what happened etc. may mean we'd prefer to go elsewhere, despite the fact that I know they have improved their protocols, monitoring, overall performance etc. since this (presumably very rare) event several years ago.
hth.