Remember this advice isn't official. There is no guarantee it will reflect your experience because university applications can change between years. Check the official Cambridge and Oxford websites for more accurate information on this year's application format and the required tests.
Also, someone else's experience may not reflect your own. Most interviews are more like conversations than tests and like, any conversation, they are quite interactive.
Test taken: Economics Admissions Assessment (ECAA)
Number of interviews: 1
Skype interview: no
Time between interviews: N/A
Length of interview: 30 minutes (following 1 hour of prep)
A paper in trade and tariffs with guiding questions was handed to me 1 hour before the interview. I presented my analysis, not interacting very much with the 2 interviewers. Then they gave me a Mathematics Problem sheet relating to a monopoly problem. We also discussed the problem in a real-world context.
Practice papers, general reading, YouTube videos and practice interviews with friends and an
Nothing to add!