I am not an expert on the pros and cons of Halon, beyond knowing what most people - and I - believe, that it is the only effective means of fighting certain airborne fires and that taking it out of use without an alternative would reduce safety.
But I do know that the body responsible for the safety of EU aircraft operators is EASA, and that if the Commission is proposing something dangerous, EASA's role is to stop it.
The UK is represented within EASA by the CAA, and of course the SRG will be pro-actively and energetically making sure that safety, in the UK at least, is not comp.......
Ah, well, yes, I do see the problem.
PS After writing that, I did what I should have done first, ie a bit of research. After discovering that CAA stands for Clean Air Act, I drilled down to
this interesting document on the SRG's website. Mind you, I don't think some ppruners will be too happy about it.