Help me please.
I don't understand this at all.
"There is no issue as to excess of jurisdiction."
It means a breach of natural justice. When it comes to jurisdiction, there are, for the sake of brevity and clarity, two types of law: domestic law, say a university's code, and the general laws of the land, the laws of the government. Neither court / judge can exceed their jurisdiction in making decisions about a case. They must deal with the laws in their jurisdiction, but that isn't always the case. (See here
Page vs. Hull Uni. Visitor (2/2) 1992)