is contravening a requirement under this Ordinance; or

has contravened such a requirement in circumstances that make it likely that the contravention will continue or be repeated, then the Commissioner may serve on the relevant data user a notice in writing-

1. stating that he is of that opinion;
2. specifying the requirement as to which he is of that opinion and the reasons why he is of that opinion;
3. directing the data user to take such steps as are specified in the notice to remedy the contravention or, as the case may be, the matters occasioning it within such period (ending not earlier than the period specified in subsection (7) within which an appeal against the notice may be made) as is specified in the notice; and
4. accompanied by a copy of this section

to any extent by reference to any approved code of practice;

so as to afford the relevant data user a choice between different ways of remedying the contravention or matter, as the case may be.

he may include a statement to that effect in the notice together with the reasons why he is of that opinion;

where such a statement is so included, subsection (4) shall not apply but the notice shall not require those steps to be taken before the end of the period of 7 days beginning with the date on which the notice was served.

forms an opinion referred to in subsection (1) in respect of the relevant data user at any time before the completion of an investigation; and

is also of the opinion that, by reason of special circumstances, an enforcement notice should be served on the relevant data user as a matter of urgency, he may so serve such notice notwithstanding that the investigation has not been completed and, in any such case-

1. the Commissioner shall, without prejudice to any other matters to be included in such notice, specify in the notice the reasons as to why he is of the opinion referred to in paragraph (b); and
2. the other provisions of this Ordinance (including this section) shall be construed accordingly.