25(1)An information notice does not require a tax adviser—
(a)to provide information about relevant communications, or
(b)to produce documents which are the tax adviser’s property and consist of relevant communications.
(2)Sub-paragraph (1) has effect subject to paragraph 26.
(3)In this paragraph—
“relevant communications” means communications between the tax adviser and—
a person in relation to whose tax affairs he has been appointed, or
any other tax adviser of such a person,
the purpose of which is the giving or obtaining of advice about any of those tax affairs, and
“tax adviser” means a person appointed to give advice about the tax affairs of another person (whether appointed directly by that person or by another tax adviser of that person).