"The factors inconsistent with a contract of service in this case have been set out by us above but, at the expense of repetition we indicate them: Payment in gross; the existence of a 715 certificate on the basis that the applicant was a sub-contractor the employment by the applicant of an accountant to prepare his business accounts; the fact that he provided his own transport and fuel, was not paid expenses and set those expenses including depreciation on his vehicle against tax liability; the knowledge by the applicant and the respondents of the advantages of being self-employed. Further we indicate that `true' employees of the respondents were given contracts of employment and treated under the usual PAYE conditions.