Having a little difficulty with duty of care. Street on Torts seems adamant that the caparo test should always be used when establishing a duty of care, and that previous case law would support the third limb of the test. However, my lecturer & tutor all say that when there is already a well established duty, then there is no need to refer to Caparo. My only problem with accepting that is, for example in the case of a doctor patient relationship, by saying that the doctor owes a duty of care to the patient, that says nothing about the extent of the duty of care.