I received a link to their platform where the online video one-way interview were recorded. On the platform there were many tutorials explaining how the the video recording worked and had a practice tool where you are able to test your camera and microphone before starting your interview. Furthermore the interview wasn't required to be taken all at once, each question asked you to start it so if you wanted you could do the first 3 questions and then continue the rest another day or after a break. Lastly, I was given constructive feedback about my interview after reciveing their final decision.

Submit a CV/Cover Letter, and following this you'll be arranged a set of video interview questions (two of which are simple numerical ones at the level of A-level- you won't be asked anything nasty.) After the digital portion, you'll get a 1.5 hour interview- three presentations (personal, technical about your own project, then about one of their technologies.) The three interviewers were quite nice and speaking candidly was fine in instances- I didn't feel as though it was excessively formal. My advice would be to really research your chosen topic- I spent two days researching mine and knowing the physics background really helped (given that two of the interviewers were physics-oriented.) Also, one more bit of advice- on your "Technical Talk" about your own chosen previous project, make it very very generalist- I misunderstood this bit and made assumptions on the level to which it should be given that I shouldn't have. They don't want to know the details of how you carried out the analysis itself, propagated errors, etc etc- just the rough outline of the project as if explained to layman audiences. The questions will be where that'll pop up more in detail. Good luck!