(1) The Chapter II prohibition does not apply to -
(a) practices of a recognised body;
(b) the adoption or enforcement of such a body's regulatory provisions;
(c) any conduct which is engaged in by such a body or by a person who is subject to the rules of such a body to the extent to which it is encouraged or required by the regulatory provisions of the body.
(2) The Chapter II prohibition means the prohibition imposed by section 18(1) of the Competition Act 1998 [1998 c. 41.].