Unidentified white fungus. Jelly-like but not like Exidia.
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
No interactions present.
Did you take any photos of the under surface or can you remember if it had spines,pores or gills
I didn't look too closely!
Looks like that is the underside
All given ID's are subject to error/ommissions. Please seek independent verification before acting on ANY advice given. BE SAFE =)
Second photo added - prob not much help (from lower down on the same branch). I think it is a fallen Birch branch.
Lat/Lng: 54.87, -6.49
OS grid ref: NW120620