A couple of days ago I noticed the lichen growing on a piece of old wood had red on the tips of the green stalks. today I had another look and the red tips were even more distinctive.
I took some photos on my mobile phone, see below.
I have done a Google search and it would seem these are one of the Cladonia order of lichens, most probably cladonia cristatella commonly known as British Soldier Lichen.
I will be making a point of keeping an eye on them to see how they develop.