TL & OP
Thank you both for your contributions - A parallel query re the 33 ILS has also been posted on another site. (Not me)
I've done a bit of research re CAT III Airfield Operations since posting and I hope OltonPete is correct but looking at the situation as an unqualified outsider, it does not very clever.
Re the berms: The Airport management will hopefully be addressing the situation professionally.
CAT III