This is a hard fungi growing on a dead fruit tree stump.
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.
Or hoof fungus, would be my guess. Commonly found on birch (which I think this stump is). But I'm not good on the bracket fungi!
Revision: Flaxton is much more likely to be correct: Fomes is usually found as an individual specimen.
Thanks for this information. You could be right about it being a birch tree rather than a fruit tree and it certainly looks a bit like a hoof. I have just had another look at it but with my limited knowledge I cannot identify the tree stump.
The cracking upper surface and "clumped" growth make it unlikely to be a Fomes.
Lat/Lng: 51.9, 0.2
OS grid ref: TL5233