The process took a couple of weeks. I applied online on the website, and I was contacted within four days. I had a phone interview, and the person seemed pretty happy with my answers. I needed to travel to London for the interview with 2 managers. The interview lasted 90 minutes, it was so long and we went through all of the points on my resume. I needed to explain everything, and I answered lots of questions.
I knew that the interview didn't go well because: 1) they mentioned nothing about the salary, 2) they mentioned nothing about the further steps. I even sent them a thank you note, but they never replied. I only know that I wasn't accepted because I checked my profile a few minutes ago and my status is now changed to "UNSUCCESSFUL".
Worth it? Maybe. Would I do it again? No.