“In deciding whether or not to exercise their discretion to allow an amendment, the tribunal should in every case have regard to all the circumstances of the case. In particular they should consider any injustice or hardship which may be caused to any of the parties, including those 4110004/2021 proposed to be added, if the proposed amendment were allowed or, as the case may be, refused.”
“…an application for amendment made close to a hearing date usually calls for an explanation as to why it is being made then, and was not made earlier, particularly when the new facts alleged must have been within the knowledge of the applicant at the time he was dismissed and at the time when he presented his originating application.”