7. When an Appeal Panel notifies its decision to allow or not allow an appeal under regulation 16 or 17, it must—
(a)do so in writing to both the operator concerned and the appellant;
(b)give reasons for its decision;
(c)if the appeal was received by post, notify its decision by post to the postal address the appellant has provided;
(d)if the appeal was received by electronic transmission, notify its decision either by electronic transmission to the email address used by the appellant to submit the appeal or by post to the postal address the appellant has provided.