"For the reasons stated in paragraphs 18 and 19 above, the Tribunal concluded that the custom and practice on which the Applicant sought to rely was insufficient to justify the implication of a right to carry over unused holiday entitlements from one year to the next, and that the Applicant had had no right to carry over any such entitlement in respect of the holiday year 1999-2000 given that there had been no agreement on the part of the Chairman of the Respondent's Management Committee for him to do so."