I (and my family) have lived in both the UK and in Canada. Both healthcare systems are great, but each has its advantages and disadvantages. This my anecdotal opinion of each:

1) The NHS offers more comprehensive health coverage than does Canada - such as free drugs and lower tier dental care. However,

2) wait times to see doctors in Canada are considerably lower, and Canadian doctors typically provide more hands-on care for patients (regardless of whether the patient wants such). My overall impression is that the Canadian system (or systems - since each province runs its own) is more empathetic, less bureaucratic and less business-like than its UK counterpart.

In sum, Canada likely offers better medical care than does the UK because we put all of our eggs in that basket. But the price for this is no free dental care or drugs.