7.—(1) The person on whom a stop notice is served may appeal against the decision to serve it.
(2) The grounds of appeal are—
(a)that the decision was based on an error of fact;
(b)the decision was wrong in law;
(c)that the decision was unreasonable;
(d)that any step specified in the notice is unreasonable;
(e)that the person has not committed the offence and would not have committed it had the stop notice not been served;
(f)that the person would not, by reason of any defence, have been liable to be convicted of the offence had the stop notice not been served.