On Jul 3, 11:12 am, "Luke" blah@blah wrote:
I have sprayed triforine on it, I realise it is a
rose fungicide but thought it may help.

Fungicides probably won't do much to solve the problem. Systemics are
transported through living tissue. As the heartwood of the tree is
essentially dead, a systemic fungicide is unlikely to reach the fungi
causing the problem. Even spraying the surface that you've just
pulled the fruiting body from will not kill the fungi deep inside the
tree.