This purple fungus is on a Beech tree in Centre Vale Park woodland Todmorden. I think it is Purple Jellydisk–Ascocoryne sarcoides which is a fungi often seen on dead Beech wood. Perhaps someone could confirm this?
The middle photo is taken with flash, the others without. You can just make out the fungi on the lower trunk in the bottom photo.
Also significant are the black inky spots on the lower right root flare and a larger inky streak on the centre of the trunk. These are the signs of Phytopthora disease and this Beech is quickly dying from this fungal-like pathogen.