"The arrangement was not confined to the computer the same thing applied when he acquired a car and to invoices for various works done to the car;"
"where both employer and employee knowingly commit an illegality by way of a fraud on the Revenue in the payment and receipt of the employee's remuneration under the contract of employment, which is an essential part of such a contract, then we think that there can be no doubt that this does turn it into a sort of contract, that is prohibited by statute or Common Law, and consequently the employee is precluded from enforcing any employment rights she might otherwise have against her employer. The incidence of income tax frauds, both large and small, is so rife that they cannot be brushed on one side and the blame for them always laid only at the feet of the employers."
"In Coral Leisure Group Ltd v Barnet[1981] ICR 503 , the Employment Appeal Tribunal asked itself the question whether any taint of illegality affecting part of the contract necessarily rendered the whole contract unenforceable by a party who knew of the illegality. In the case of a contract not for an illegal purpose or prohibited by statute the appeal tribunal answered that question in the negative, holding that the fact that the employee in the course of his employment committed an unlawful act did not prevent him from asserting thereafter his contract of employment against his employer."