““recognises both the power of Courts to protect and regulate their own process as well as their power to develop the common law . . . . The power recognised in s 173 is a key tool for Courts to ensure their own independence and impartiality. It recognises that Courts have the inherent power to regulate and protect their own process. A primary purpose for the exercise of that power must be to ensure that proceedings before Courts are fair. It is therefore fitting that the only qualification on the exercise of that power contained in s 173 is that Courts in exercising this power must take into account the interests of justice.””