9(1)Subject to paragraph 11 below, paragraph 8 above shall not have effect in relation to any document which contains information explaining any information, return, accounts or other document which the person to whom the notice is given has, as tax accountant, assisted any client of his in preparing for, or delivering to, the Board.
(2)For the purposes of this paragraph, a person stands in relation to another as a tax accountant at any time when he assists the other in the preparation or delivery of any information, return, accounts or other document which he knows will be, or is or are likely to be, used for any purpose of tax; and his clients are those to whom he stands or has stood in that relationship.