IO540, just to remind you, you asked about ABSOLUTE minima not recommended minima; the two are different things. I simply quoted CAP168, which incidentally differs from the AIP.
CAP168 says 400m irrespective of lighting/markings - that's for the airport operator to enforce (if necessary) whilst the AIP then tells aircraft operators they can use lower minima if they have extra lighting etc.
The minima you are quoting is the minima RECOMMENDED in the AIP.