Small fungi growing on Hawthorn trunk
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.
The colour is indeed rather like Trametes pubescens, as suggested above, but looking at the second photograph at high resolution, we can see the under-surface is smooth, not poroid, so definitely not a Trametes!
It's an odd colour for S. hirsutum, which is usually a more uniform grey when dry, and I had a look in vol 12 of Fungi Europaei (Corticiaceae s.l.) to remind myself of other, rarer Stereum species. In fact the photograph of S. hirsutum used in that monograph shows a dried out colony that is identical in colour and pattern to what we see above.
Shiela has this nailed.
Lat/Lng: 55.504321, -2.050994
OS grid ref: NT968233
about 40m to the south of footpath