13 There is no evidence that in this case any of the parties represented by Gunson Williams is unaware of common representation, nor that any has other than full knowledge of the matters referred to in r12(2)(b) and has consented to common representation. If, during the continuation of these proceedings, the firm becomes aware of circumstances giving rise to the operation of r12(3), then the duty of the firm is mandatory. For this Court, without evidence, to intrude into the solicitor/client relationship and inquire into the details of instructions, the advice provided and the state of awareness of each client would constitute an unwarranted invasion of privilege. It ought make inquiry at the behest of a client, or, if during the course of a hearing it becomes apparent from the evidence or the conduct of the proceedings that a circumstance predicated by r12 exercises the power of supervision and, if necessary, intervention (Mullins v Rothschild [2001] TASSC 76, Kingston v State Fire Commission 140/1998). But no such circumstances have arisen thus far in these proceedings.