Not quite correct, Cloud CEILING below 200ft and vis less than 600m.
But just because the wx has got to this doesn't mean that LVP's are automatically in force - only when the Airfield is Safeguarded (gates locked, contractors cleared, barriers at vulnerable points out), all vehicles are accounted for i.e free ranging stopped and vehicles left the maouvering area, the standby generators running and powering the essential stuff (so that if it fails there's an instant switch over to mains as opposed to the delay in running up if it were the other way round, the ILS confirmed as Cat2/3, the correct spacing in place to allow LVP's to take place, traffic no closer to the Runway than Cat3 holds, pilots informed - only then can LVP's start. You may be given RVR/Cloud and told Safegurding not completed yet and LVP's not yet in force, which may take 20mins or so if all goes well. You have the choice of making an approach or waiting for protection.