Via the Commonwealth Scholarship Commission in the UK
http://cscuk.dfid.gov.uk/apply/phd-scholarships-high-income-countries/

Applications are now open for 2019 Commonwealth PhD Scholarships for citizens of high income Commonwealth countries (including Canada).

Funded by the UK Department for Education, these scholarships support excellence in UK higher education and sustain the principles of the Commonwealth. Candidates will be selected based on their potential to lead in the pursuit of global excellence in research and knowledge, as well as academic merit and the quality of their plan of study.

Candidates are advised to read the terms and conditions carefully and to ensure they meet the full eligibility criteria as stated in the terms and conditions. For full details, including eligibility criteria and how to apply, visit http://cscuk.dfid.gov.uk/apply/phd-scholarships-high-income-countries/

The deadline for applications is 28 August 2019.