This paper will cover two separate topics which, it is hoped, are of interest and practical utility to criminal law practitioners. As is necessitated by the allocated time, and no doubt much to the relief of the audience, the focus of this paper will be inexorably practical and pragmatic. In deference to the undoubtedly substantial experience of the members of this audience, no attempt will be made to set out the basic principles of the areas of law under consideration. Instead, the writer will endeavour to highlight aspects of each area of the two areas of law under consideration which may be less well understood of known while at the same time being of use in the everyday conduct of a criminal practice.