Easy though it took a bit of time to from start to end. The each stage took about a day depending on the question. Entire process could technically take 2 weeks from interview to start day.
I applied online. The process took 4 weeks. I interviewed at Comprend (London, England) in Nov 2019
Interview
Applied online and was informed my application was of interest. I was then asked to complete a 500 word writing task based on a particular case to see how I would respond, despite the acknowledgement that expertise at this stage would not be expected. Following the success of this, I was invited to partake in an online interview with two interviewees, one in London, one in Sweden. Following this, I was invited to the London office by Tower Bridge for an in-person interview with two interviewers. I decided at the time to take another role the day after the in-person interview, and they were understanding and supportive of this decision. Overall a really positive experience, an interesting company, nice but challenging interview experience, and impressive office.