2The Secretary of State may, by notice in writing served on any member of a duly recognised committee, withdraw his recognition of the committee if he considers it expedient to do so—
(a)where the committee is recognised in pursuance of section 19(1) or (3) above or paragraph 1(1)(a) above, with a view to recognising in pursuance of paragraph 1(1)(b) another committee representing categories of persons, which include the category represented by the recognised committee; or
(b)where the committee is recognised in pursuance of paragraph 1(1)(b), with a view to recognising in pursuance of any of the provisions of section 19 and paragraph 1 other committees which together are representative of the categories in question.