2.—(1) In these Rules—
“business” includes a sole trader, a company, an unincorporated association and a partnership;
“labour user” means a person to whom workers or services are supplied;
“licence holder” means the business granted a licence;
“principal authority” means the individual responsible for the day-to-day management of a business;
“working day” means a day other than a Saturday or a Sunday, Christmas Day or Good Friday, or a date which is a bank holiday under or by virtue of the Banking and Financial Dealings Act 1971(1).