every time someone asks a question like this, the answers people get are always are always interpretations of the requirements. which may or may not be accurate or out of date.
I think we should be referring them to the source information, eg LASORS on the CAA website which answers many questions regarding the situation under JAR-FCL in the UK, comprehensively and in a manner which can still be understood.
in this case kates see
http://www.caa.co.uk/docs/175/Lasors_Section_H.pdf
page 6.