I'm struggling a little with the "duty of care" thing too... I've got two conflicting things in my head - I've read somewhere (a case and I can't recall which one - it might be the Nicholas H - or it MIGHT be Osman) which says that the 3-stage test should be applied EVERY TIME.. but then I read material that says where the duty question has alreayd been established in existing cases there is no need to apply the caparo test... In fact, I think it was Osman such that the ECtHR pretty much said that blanket immunity was a breach of Art 6... maybe that means you apply the Caparo ONLY when you have a situation where established law says there is NO duty?
Additionally, I've read a case which said that the caparo test is not applicable to physical harm cases... the caparo test is intended to deal with economic loss... case slips my mind without diggin out my notes - but on judge was scathing at the suggestion that F,J & R criteria were being improted into a physical harm scenario where the neighbor test and incremental approach still holds true (in fact, I think I got that from Weir's text)
I find myself really struglling with tort because I just can't get my head around the Duty of Care concept and when the test is applied/when it isn't applied!?