Originally Posted by
chevvron
there is also minimum safe visibility to be taken into account and this also has a factor for any available airfield lighting.
Visibility/RVR minima are tabulated in the UK AIP for different DH/MDH values and lighting systems. For those of us that use charts from the AIP rather than from third parties, it's a regular part of preparing for an approach. It's not the responsibility of the approach designer.
I would say that approach design is definitely an area of aviation that is "terribly unforgiving of any carelessness, incapacity or neglect"!