On the cliffs leading up from the car park immediately above the lighthouse to the cliff walk towards north stack there are plenty of Anthyllis vulneraria sub species. Most are ssp vulneraria but others have patent hairs and fleshy leaves and are supposed to be ssp corbierei.
But when we investigated we found all forms in between ssp vulneraria and ssp corbierei. It is in Stace as a proper sub species but I don't believe it - it just looks like an ecological variant or form. However it is present on those cliffs and is classed as Rarity: