What are the advantages of the UK LLM or MA Law?
The Government of Canada itself recommends international education. According to the Study Group on Global Education's 2017 report Global Education for Canadians: Equipping Young Canadians to Succeed at Home and Abroad:
" Learning abroad may have once been seen as an optional extravagance. It now needs to be recognized as a national imperative. Providing students with international experience is a smart investment in their future success – and Canada’s...Global education generates the skills, understanding, outlooks and relationships that can help our country at a time of rapid change in the world and at home."
Studying in the UK will allow you to gain those skills in the country that originated common law. You will gain valuable international experience and be able to bring what you have learned back to Canada (or even pursue further opportunities in the United Kingdom if that is your goal).
The UK is the acknowledged global pioneer in the development of leading-edge graduate degrees that combine professional disciplines with law and law related regulation. Many undergraduate (B.A./B.Sc.) degree holders are eligible for direct admission to one- year graduate MA Law and M.Sc. Law degree programs of study (even without previous study of law for many programs!). Most degrees are only one year long, allowing you to begin your career quickly with the knowledge that you need to succeed. Some universities even offer online programs.