Ganoderma on Sycamore

Ganoderma on Sycamore

Observation - Ganoderma on Sycamore - UK and Ireland. Description: At first I thought this might be Hoof Fungus (Fomes fomentarius), but then I changed my mind to a Ganoderma - but I don't know which kind...can anyone help please? ...probably still wrong....

At first I thought this might be Hoof Fungus (Fomes fomentarius), but then I changed my mind to a Ganoderma - but I don't know which kind...can anyone help please? ...probably still wrong....