ATC and Minima
In response to the query above and bearing in mind this is from a UK ATC perspective therefore it is more than likely not as promulgated in Ireland but it may be of interest...
...ATC are not involved /responsible for determining,passing or enforcing mandatory aerodrome minima and shall not question the authority of a pilot to attempt an approach...(my underlining,the rest directly from our Manual)
...an absolute minima is calculated for any instrument approach other than CAT 2/3 ILS,this is a theoretical value which is passed only when weather limits are below specified values the purpose being a final safety check to ensure a pilot has not made a gross error in his/her calculations.