Posted: 11/11/2013 at 10:19
Thank you Rosie that's really helpful, sorry you have had to suffer from it too! The tree is getting pretty ugly, and the fungus is as you describe so maybe it is time to let go.
Sorry Berghill I wasn't able to get a picture but it does match Rosie's description, and thank you Roy that link is very interesting, I am a bit wary of using Armillotox anyway, but I have heard that it works in this case so...
I have looked at RHS about planting a new tree and spoken to someone from Dave Ford Tree Care (its local and they had great stuff on their website for it) just to be safe as I am not confident enough with my own judgement. They are going to come over to do an assessment and perhaps even assist with removing the tree if necessary. We will be replacing it if this happens, but hopefully it can be saved!
Thank you all for your help and advice though everyone!