OK, I've just applied for student finance via the online form (apparantly the first potential NHS student to do so). I had to call their support line a couple of times while filling it in, as in parts the form is not clear for NHS students.
Anyway, they confirmed that as an NHS student, applying for a means-tested bursary, you can only apply for the non-means tested portion of the student loan (thereby only qualifying for the maintenance portion). There is an option to choose the non-means tested bursary (can anyone confirm in what circumstances you would choose this one).
However, there was an anomaly in the form, which I'm not entirely convinced about. Basically, there is a question (which you must answer) which asks how much the university tuition fees are. As an NHS student, fees are non-payable, however when I first rang Student Finance I was told I couldn't put a 0 figure in and had to contact the Uni to find out how much the course costs were. I phoned the Uni and they confirmed that the question should not be applicable for NHS students, but could not advise about the form. I rang Student Finance back who thought (but could not give a definite answer) that I should put a 0 vaue in. I did this and was able to process the form.
Anyway, to cut a long (and boring) story short, if you are applying online, check with the student finance team what value to enter for this question, however I think to put in a 0 value is the most logical choice.
sDs