You however will find, sailor joe, that many airlines have more restrictive minima than what might be listed on the approach chart, and this is usually specifed in the Operations Specifications (or elsewhere) issued by the regularory authority concerned.
This may well be the case for circling approaches, just as an example.
Some US airlines, for example, limit circling approaches to 1000ft/3 miles (1000ft/4800m) for a category D aircraft, whereas others will be allowed the to use the charted minima, 600ft/2 miles (600/3200m).