Kindly let me know if you know any PhD scholarship opportunities in aforementioned countries for a Sri Lankan in the area of Finance / Corporate Governance.
I have completed my Masters qualification last year in Applied Finance.
You can apply for Australia Awards Scholarship & Common Wealth Scholarship. Please check their relevant websites for the students of developing economies.
To my knowledge, there are plenty of opportunities, as I have known several Sri Lankan students who studied in Australia and NZ. Look around in your own universities for guidance.