Sorry Spekesoftly you are incorrect. I think you may have to read a little more.
AIC 7/25 (Pink 79)
"Each ATC unit has calculated the minimum RVR values, for EACH TYPE OF INSTRUMENT APPROACH available at that airfield, below which pilots should not continue an instrument approach below 1000ft above aerodrome level"
No exemptions except those granted by the CAA to airlines that do not have to comply with the 1000ft barrier.
Does anybody know which airlines do not have to comply with this 1000ft barrier?