self-reported ethnic origins in Ontario:

Approximately 12.1% of Ontarians reported English ancestry.
Approximately 4.7% of Ontarians reported Scottish ancestry.

Approximately 15.7% of Ontarians reported "Canadian ancestry" as one of their ethnic backgrounds.
It's estimated that approximately 40-50% of those who report Canadian ancestry also have English ancestry.
It's estimated that approximately 20-30% of those who report Canadian ancestry also have Scottish ancestry.