The colour has come out too red - it should have been more buff. When I peeled off one of the flakes, it felt hard and woody, almost like a piece of bark.
No identification made yet.
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Do you know what species of tree it was growing on?
This post appears quite similar to your own:
That's what put me off thinking it was Stereum rugosum, which grows on broadleaf trees. However, it was found in a mixed wood which was predominantly birch.
BTW, the link you gave looks like the same thing, but it wasn't my observation.
There was no evidence of bleeding in the sense of reddening when damaged, but the droplets were present even though it had not been raining for days.
It does rather look like conifer bark. Have you considered Stereum sanguinolentum?
It didn't bleed red, wasn't downy or hairy, no concentric zones in shades of brown, so I think it's unlikely to be S sanguinolentum.
Is it possible for Stereum rugosum to grow on a conifer?
Well, I just had a word with God and he says no, that's not possible ;)
Lat/Lng: 54.4, -6.6
OS grid ref: NW0618