David Collins practiced commercial litigation in Toronto, Canada and was a Prosecutor for the Attorney General of Ontario in the early 2000s. He has been teaching and researching in the area of international economic law since joining City University London in 2005. He has taught in Spain and Russia and spoken around the world on these topics at academic conferences. He has been a visiting scholar at a number of universities including Georgetown, Columbia, Hong Kong, Sydney and Oslo. David is admitted to practice law in Ontario, New York and England. In the past, he has consulted for the World Bank, the Commonwealth Secretariat, and the UK Department for Business, Innovation and Skills.