I applied through a staffing agency. The process took 3 months. I interviewed at BT Group (London, England) in Dec 2018
Interview
Contact by recruiter. Briefing by recruiter. 60 minute interview with head of department. Debrief by recruiter. That was it. Very straightforward. There were lengthy gaps between each stage of the process, but this wasn't a problem.
Interview questions [1]
Question 1
What are your skills; what is your relevant experience