Article 4 I1

It shall be unlawful for an exhibition organiser, as a condition of supplying any goods or services to an exhibitor at an exhibition in a London exhibition hall belonging to a hall owner connected with the exhibition organiser, to require the exhibitor to use the electrical contracting services of the exhibition organiser unless that person has been competitively chosen.

For the purposes of paragraph (1) above, a condition which requires an exhibitor to use the electrical contracting services of a person mentioned in that paragraph includes one under which the use of the services of any other person is subject to conditions or restrictions which do not apply in respect of the use of the services of the persons mentioned in paragraph (1) above or is otherwise less advantageous to the exhibitor.