I applied through a recruitment agency and the entire process took about 2 weeks. I've been asked to fly to London (no expense refund) to have the interview. First of all, I've been asked to leave all my belongings in a locker and then I signed an NDA, so I'm afraid I cannot disclose the questions I've been asked. I had a technical test and after that, since I passed, three face to face interviews with three different members of the team: a junior, a recently promoted senior and the manager of the team. I heard about the results two days after the interview: my technical skills were a good match, however the manager doesn't think I'm a good fit for the team. Overall it was a pleasant experience, everybody is very kind. I'd recommend applying for a role at G Research: very interesting company and great location

HR take you to a small room, signed an NDA and given envelope containing letter on giving feedback for the 'assessment process' via glassdoor. Letter also mentions 'will be in touch soon with feedback on your application' more on that later. Encouraged to complete asap, I explain later on why that is mentioned. Then given an hour to take technical test, pretty standard(ish) questions. This is then scanned and emailed to tech team for marking. If you get above certain credit threshold you can stay and inteview does not terminate. I passed, then you are interviewed by team members that you may eventually work with. They will come and go, you don't really know who is coming in next and for how long, this for me was a couple of hours, eventually seeing four people altogether. Finally interview process came to an end and told they will let me know. Days went by, I contacted HR to see if there was any response/update to application no reply. So after a few weeks passed realise that's that!, they should have the courtesy to provide some feedback whether positive of negative for my time/money spent and then not get any response.