"I must now consider what is meant by a contract of service. A contract of service exists if the following three conditions are fulfilled: (i) The servant agrees that in consideration of a wage or other remuneration he will provide his own work and skill in the performance of some service for his master. (ii) He agrees, expressly or impliedly, that in the performance of that service he will be subject to the other's control in a sufficient degree to make that other master. (iii) The other provisions of the contract are consistent with its being a contract of service."
"Whether or not a person is employed under a contract of service is often said in the authorities to be a mixed question of fact and law. Exceptionally, if the relationship is dependent solely upon the true construction of a written document it is regarded as a question of law; see Davies v Presbyterian Church of Wales[1986] ICR 280 . But where, as in the present case, the relationship has to be determined by an investigation and evaluation of the factual circumstances in which the work is performed, it must now be taken to be firmly established that the question of whether or not the work was performed in the capacity of an employee or as an independent contractor is to be regarded by an appellate court as a question of fact to be determined by the trial court. At first sight it seems rather strange that this should be so, for whether or not a certain set of facts should be classified under one legal head rather than another would appear to be a question of law. However, no doubt because of the difficulty of devising a conclusive test to resolve the question and the threat of the appellate courts being crushed by the weight of appeals if the many borderline cases were considered to be questions of law, it was held in a series of decisions in the Court of Appeal and in the House of Lords under the English Workmen's Compensation Acts 1906 and 1925 that a finding by a county court judge that a workman was, or was not, employed under a contract of service was a question of fact with which an appellate court could only interfere if there was no evidence to support his finding."