Paragraph 21 Appeals against decision not to issue a certificate
The person to whom a notice is given under paragraph 20(4) may appeal against a decision not to issue a certificate under paragraph 20 on the grounds that the decision—
(a)
was based on an error of fact;
(b)
was wrong in law;
(c)
was unfair or unreasonable;
(d)
was wrong for any other reason.