10EAny person who has been refused compensation under this Schedule or is receiving or has received such compensation may apply to the pastoral committee for a grant or renewal of such compensation or, as the case may be, an increase of such compensation (whether by way of an increase of periodical payments or a lump sum payment or both), on the ground that circumstances of which account was taken under paragraph 8 or paragraph 9 have materially altered to his disadvantage, and the pastoral committee may grant or renew such compensation or make such increase thereof on that ground, and an appeal shall lie to the Appeal Tribunal against the refusal of any such application.