SAR WB
When Lands End airport is fog bound no one is popping anywhere even if it had high intensity lighting (on the approach) which is does;nt and regardless of what approach you had made (The GPS approach only allows you down to 400 ft 'above' the airfield).
PZ is at sea level and for decades the aircraft were able to transit the Scilly route at 500 ft in the knowledge that they would be able to conduct a visual approach to the Heliport.
No one is suggesting that IFR arrivals are going to be the norm or even allowed. The point is that on the NUMEROUS days when L-end is clamped PZ is still open, because it is both lower and in the shelter of the peninsular.
I have known 3 day clamps at L-End when the S61 operated as normal from PZ, and that was with the old St Mawgan as a diversion. Of course it can also operate with Scilly as a diversion if deemed to be wx satis.