These are the species I saw on the JNCC UK Biodiversity Action Plan UK lists (last updated 2007). These are the species conservation organisations, local authorities and the government should all be focussing on. The full list can be found here: UK BAP List of UK Priority Species | JNCC Resource Hub
I have not given the location of Phyteuma spicatum, Spiked Rampion; as its is now very rare and highly vulnerable to theft.
Clinopodium acinos ,Basil-Thyme, Castle Hill
Juniperus communis Common Juniper Levin Down
Monotropa hypopitys, Yellow Bird's-Nest, Friston Forest
Phyteuma spicatum, Spiked Rampion
Dumortiera hirsuta, Dumortier's Liverwort Fairlight Glen
Cupido minimus. Small Blue Castle Hill
Erynnis tages, Dingy Skipper Castle Hill
Hipparchia semele Grayling
Cinnabar Moth, Tyria jacobaeae Cinnabar Moth
