There is no safety case to make them repeat it just to satisfy some bureauocrat. Certainly the UK did not follow that stance prior to interference from Europe.
The requirement is unambiguous:
FCL.210.A PPL(A) — Experience requirements and crediting
(a) Applicants for a PPL(A) shall have completed ....
(2) 10 hours of supervised solo flight time, including at least 5 hours of solo cross-country flight time with at least 1 cross-country flight of at least 270 km (150 NM)....
No "ifs", no "buts", no exceptions and no alternative means of complying (unless someone knows differently?)
This is exactly how the UK CAA interpret Part-FCL. There was a Thread several months ago where an NPPL Holder who had completed a 150nm solo flight as part of his NPPL instructional course was still required to repeat it in order to upgrade to an EASA PPL.