I applied through college or university. I interviewed at Thomson Reuters
Interview
1. First there was a test to test the simple maths and general news sense. They also test writing skills and business news writing.
2. After that there is a personal interview with questions on ethics and general knowledge.
It was good and comfortable in the beginning but became a rapid fire test towards the end. Be fully prepared with all the information and hypothetical questions. Please research more and learn as much as possible.