"…an entry clearance or immigration officer's stamp that allows the student to study states: "
"part time or vacation work with the consent of the Secretary of State."
"Students should not work for more than 20 hours a week during term time, except where a work placement meets the definition of a sandwich course or internship (please see paragraphs 18.2 and 18.3 below for these definitions). They may work full time during their vacation period and during the additional period of 2 or 4 months following completion of their studies whilst, for example, waiting for their examination results, prior to attending their graduation ceremony or before commencement of their new course. A student must not engage in business, self-employment or the provision of services as a professional sports person or entertainer. A student is not permitted to pursue a career by filling a permanent full-time vacancy."
"… My understanding of the nature of the work that the Claimant did was that he worked regularly for the Respondent but doing night watchman/security work which varied from week to week, and which was paid by the hour. Therefore I do not think that his working relationship with the Respondent can be characterised as filling a permanent full time vacancy."
"As for the illegal conduct here: (a) it was that of the applicant; (b) it was criminal; (c) it went far beyond the manner in which one party performed what was otherwise a lawful employment contract; (d) it went to the basic content of an employment situation- work; (e) the duty not to discriminate arises from an employment situation which, without a permit, was unlawful from top to bottom and from beginning to end."
" Unlicensed transactions . Where a statute or statutory instrument prohibits the doing of work otherwise than under a licence, a contract under which unlicensed work is carried out will generally be unenforceable. If there is in existence some licence, the illegality only extends to the excess by which the work exceeds the amount of the licence, unless there is an unseverable agreement to exceed the amount licensed."
"In two types of case it is well established that illegality renders a contract unenforceable from the outset. One is where the contract is entered into with the intention of committing an illegal act; the other is where the contract is expressly or implicitly prohibited by statute: St John Shipping Corpn v Joseph Rank Ltd[1957] 1 QB 267 , 283 per Devlin J. In a third category of cases a party may be prevented from enforcing it. That is where a contract, lawful when made, is illegally performed and the party knowingly participated in that illegal performance…"