18.—(1) These Regulations shall not have effect in relation to employment under a fixed-term contract where the employee is an agency worker.
(2) In this regulation “agency worker” means any person who is supplied by an employment business to do work for another person under a contract or other arrangements made between the employment business and the other person.
(3) In this regulation “employment business” means the business (whether or not carried on with a view to profit and whether or not carried on in conjunction with any other business) of supplying persons in the employment of the person carrying on the business, to act for, and under the control of, other persons in any capacity.