Initial on demand video interview, was pretty similar to other graduate programmes. Nothing really stood out, it was fine. Then there was also a section with games, it was pretty easy overall I'd say.
I applied online. I interviewed at WTW (London, England)
Interview
I had to answer 6 questions in online video and was common ones, last question was about getting CFA qualification and asking that are you be able to practice for it or not
Interview questions [1]
Question 1
What do you know about Willis Towers Watson? Of all your accomplishments, which makes you the most proud? Why would you like to work here?
The video interview was non-technical and very straight-forward. The key is knowing your CV and being comfortable with elaborating on these experiences within the context of your question.
Tip: use these experiences as a point of departure as opposed to a prescriptive, tick-box point of reference so that you can stay in the moment and be yourself as you interview.