LASORS has no legal status, it is only guidance material. There is no requirement in Law (ANO) for NPPL training to be conducted at a Registered Facility which after all is only for JAA training
I agree LASORS is only guidance. However JAR-FCL also has no legal status, it is only a set of requirements put together by a non-state body. Consequently there is no requirement in the ANO for JAA PPL training to be conducted at a Registered Facility. That's why they have been trying for some time to change JAR-FCL into EU-FCL. Following your logic there would be no difference between ignoring the RTF requirement for JAA PPL training as for NPPL training. I wouldn't recommend either.
By the way here's what the LAA website (yeah, I know, no legal status etc etc) says about the NPPL:
Q How many hours of training are there in the NPPL(SSEA) course?
A The course consists of a minimum of 32 hours plus tests.
Q Where can I do the course?
A At any flying club which is a registered facility or Flight Training Organisation
NS