2x 20-30 min interviews, 1 day apart
Interview 1: discussed text given beforehand; Interview 2: discussed problem sheet and broad ideas
Past papers, TSA book
Had mock interviews; read as much as possible; practised making counterarguments
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:
Number of interviews: 2
Skype interview: No
Time between each interview: 1 day
Length of interviews: 20-30 minutes each
My philosophy interview was based on the reading they had given me. It started with a discussion about the passage and then moved to wider discussion of the theme of the passage.
I had a joint politics/economics interview (10-15 mins on each). Economics was just working through a problem sheet, politics was a general discussion on one theme.
I did some practice papers, and also used a book called
I did some