Hiya!
Just wanted to say that as far as I've seen it depends on different Hospitals as to what the Auxillary's do and the different grades.
I've been really lucky to speak to a Mca who was a relative of one of my patients (I work in the community as a Nursing Auxillary for the eldery/hospital avoidence) who works as a Hca in Maternity.
She's obviously very experienced at what she does but apart from sorting stores/cleaning rooms/beds etc she's assisted mw's with deliverys and now works post natel ward where she does Ob's and weighs babies. She's even been at C section's.
She says that though she didnt have NvQ3 qualification (she has been doing it over 30 years), those that do go up a grade (normally start as an A grade and go up to a B grade here)and do go on to have more responsibilty (sorry cant spell).
If you do go for the job its a brilliant way in. My plans get NVQ3 qualification for mw enterence, get a job hopefully on Mat ward, get experience then hopefully get seconded into MW training.

Go for it!