5.—(1) At any time before the Minister has decided the appeal, the appellant may, with the permission of the Minister, amend the grounds of appeal.| (2) The Minister may grant the permission under paragraph (1) on any terms or conditions that the Minister may determine, and may give any further or consequential directions that may be necessary. |
(3) However, the Minister must not grant the appellant permission to add a new ground of appeal, unless the Minister is satisfied that —| (a) | the ground is based on a matter of fact or law which only came to light after the appeal was made; | | (b) | it was not practicable to include the ground at the time the appeal was made; or | | (c) | there are exceptional circumstances for the ground to be added. |
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