Not sure if you've already seen this page. it has some great insight into the interview from the last cycle
https://www.thecorporatelawacademy.com/forum/threads/travers-smith-interview-2019-2020.2286/
Also, I was doing some research on their interviews a few weeks ago (even though I don't have an interview invite) and quite a few resources said that travers like to ask quite a few 'moral' questions in the VS interview
As someone already said Travers like to ask moral questions and I attended a session with one of their partners. He said that there is no correct answer and no matter how good argument you have, they will challenge you just so they see how you react and what you should do is not trying to find the correct answer but present a well-structured convincing argument. The partner also said that he wants to see passion not only about law or Travers but in general. He said that he always asks a question which is unrelated to the law but about you/your CV or experiences, and he wants to see the candidate to talk passionately about it.
This is so helpful!!! Thanks so much to you both