Horsey
Cladonia cornuta
A heathtail. Robust podetia half corticate and half sorediate , pointed, unbranched. The upper half grey green to grey white & densely farinose sorediate
Chemically negative except for Pd + red
Rare in our part of the world.
Has also recently been found on Cawston Heath as well
BLS 
Cladonia ciliata var tenuis
Podetia tips point largely in the same downward direction with a purplish colour.
Chemistry only Pd + red
BLS
Cladonia rangiferina
Very much in an isolated population that seems to be growing slowly.
A bulky lichen with recurved branches and a more visible felted cortex than other reindeer type lichen, which can be clearly seen in the images above.
Also K+ Yellow
Cladonia cervicornis
This species has tiered cups. Generally but not exclusively one tier. Can lead to the confusion with Cladonia verticillata which is many tiered.
The key difference is the longer more incised lobes of the basal squamules in Cladonia cervicrnis, which can be seen in the images above.
Hypogymnia physodes
Corticifraga fuckellii
Hawksworthiana peltigericola
Nectriopsis lecanodes
Three Species of lichenicolous fungi found on Peltigera hymenina
BLS