"As a supply teacher the procedure was that through contacts, the applicant would get in touch with a school, or sometimes the school would get in touch with him, and invite him to go and teach for a period. The period might be a day or a week or what he called, "open ended", that is to say as long as he was required. He listed some 6 or 7 schools where he had worked, but was not in a position to produce today a comprehensive list of schools and periods when he worked. What he did tell us in evidence was that there were substantial periods where [sic when] he did not work as a teacher, and furthermore than [sic "that"] in a period in September 1992 he was not in a position, for personal reasons, to accept any offers that might have been made."