"In general I agree with the view expressed by the EAT as to how a tribunal should treat and assess matters which they regard as important but which the applicant or his representative has either not mentioned at all or has apparently treated as of little importance. It is however necessary to add that it would be unwise and potentially unfair for a tribunal to rely upon matters which occur to members of the tribunal after the hearing and which have not been mentioned or treated as relevant without the party, against whom the point is raised, being given the opportunity to deal with it unless the tribunal could be entirely sure that the point it so clear that the party could not make any useful comment in explanation."