Note that the 30 Sep 2017 date in IN-2017/02 is the absolute end date for acceptance of training conducted before 17 Sep 2012 and that it will not be extended.
The only solution for pilots unable to complete the Skill Test before 30 Sep 2017 will be to apply for an NPPL. But that will have to be obtained before 8 Apr 2018 if it is subsequently to be converted to a Part-FCL LAPL or PPL in order to fly EASA aircraft...