Thanks guys for your responses, however I am still the none wiser, my own opinion is the CLG guide is correct, they should be risk assessed, as not all FRS,s would block them, it would depend on the circumstances.
I am with you on this one Tom, Article 50 guidance is written in support of the Order and therefore sets out the benchmark standards for the fire authorities that enforce it; notwithstanding, both risk assessors and fire authorities do need to be aware of any relevant British Standards and have due regard for them.
In my experience and from memory the conditions in Article 50 guidance are so onerous, where large numbers of members of public are present, that they defeat the object of fitting a magnetic locking device in the first place.
I suppose that really it's up to the RP to convince the fire authority with their risk assessment in each specific case.
Then of course there's the inconsistency between fire authorities that always needs to be considered; I am not personally aware of any "assured advice" or determinations on this issue.
Might be helpful to share the specific scenario you have in mind Tom, or are you just hypothesizing?