(1) An intervention notice under section 139(1) shall state -
(a) the matter to which the market study notice or (as the case may be) the consultation under section 169 concerned relates;
(b) the date of publication of that notice or (as the case may be) on which the process of consultation began;
(c) the public interest consideration or considerations which are, or may be, relevant to the matter; and
(d) where any public interest consideration concerned is not finalised, the proposed timetable for finalising it.
(2) Where the Secretary of State believes that it is or may be the case that two or more public interest considerations are relevant to the matter, he may decide not to mention in the intervention notice such of those considerations as he considers appropriate.
(3) The Secretary of State may at any time revoke an intervention notice which has been given under section 139(1) and which is in force.
(4) An intervention notice under section 139(1) shall come into force when it is
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