"In the sense that the applicant was not selected for the shortlist whereas others who had not done a protected act were, the applicant can be regarded as having been treated less favourably. However, any less favourable treatment arising from his not being selected was not because the applicant had done a protected act. He was not selected because, although he had good academic qualifications and although he had had experience in a testing environment, he had not demonstrated on his application form his ability to cope with the job the Post Office wanted him to do."