The surface is heavily cracked, revealing yellow flesh.
Underneath, large angular pores of a dull, olivaceous yellow brown colour. They appear not to be bruising, although perhaps it's harder to see in an old specimen like this.
Not sure how you'd classify the gill attachment: adnate? Noted that the flesh discoloured slightly, to a dull green colour, where it was cut.
The stipe is fairly slim and tapers downwards – not club-shaped as you'd expect to see on a classic Boletus.
It has a fairly strong mushroom-y smell.
I'm guessing some kind of Xerocomus species (possibly Suede Bolete Xerocomus subtomentosus). However, there are many that look similar and the Collins (illustrated) Fungi Guide suggests that chemical tests may be necessary to separate these species with confidence.
For the record
Location: Small Dole
Grid reference: TQ214135
Entered into FRDBI: 13/02/2017