19(1)Where an application for the renewal of a permit is made not less than one month before the date on which it is due to expire, the permit shall not cease to have effect by virtue of the last preceding paragraph before the appropriate authority have determined the application or the application has been withdrawn.E+W+S
(2)Where, on such an application, the appropriate authority refuse to renew the permit, it shall not cease to have effect by virtue of the last preceding paragraph before the time within which the applicant can appeal against the refusal has expired, and, if he so appeals, shall not cease to have effect by virtue of that paragraph until the appeal has been determined or abandoned.