11. On determining an appeal under regulation 10 the tribunal may—
(a)confirm the owner’s decision;
(b)quash or modify the owner’s decision;
(c)substitute the owner’s decision with its own decision; or
(d)where the owner has failed to comply with the procedure set out in regulations 7 to 9, order the owner to comply with regulations 7 to 9 (as appropriate), within such time as may be specified by the tribunal.