I'm pretty sure these hard ball like fungi are King Alfred's Cakes (aka Cramp Balls) but I would appreciate expert confirmation.
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.
Your ID is correct, typically found on dead/dying Ash. They are a breeding site for the Cramp-ball Fungus Weevil.
That's useful to know.
Lat/Lng: 50.664, -3.6377
OS grid ref: SX843862
Scanniclift Copse is a Devon Wildlife Trust Reserve.