This section applies if it appears to an officer of Revenue and Customs that a person may be a person to whom section 684 (person liable to counteraction of income tax advantage) applies in respect of one or more transactions.

The officer may serve a notice on the person requiring the person to give the officer information in the person's possession about the transaction or, if there are two or more, about any of them.

That information must be information about matters which are relevant to the question whether a counteraction notice should be served on the person.

Those matters must be specified in the notice under subsection (2).

That notice must require the information to be given within such period as is specified in it.

That period must be at least 30 days.