15. In the event of the death of the holder of a licence granted under this Schedule, that licence shall be deemed to have been granted to his personal representatives and shall, unless previously revoked, remain in force until the end of the period of 3 months beginning with the death and shall then expire; but the council may from time to time, on the application of those representatives, extend or further extend the period of 3 months if the council is satisfied that the extension is necessary for the purpose of winding up the deceased's estate and that no other circumstances make it undesirable.N.I.