I applied online. I interviewed at Booking.com (London, England) in Jan 2015
Interview
One group panel followed by two interviews face to face with a portfolio presentation. The interview level is average and people are fairly nice. The interview process is fast, they do not leave you on hold for a long time.
First round you do at home on your PC, online tests. I kinda didn´t have such a high score yet I was invited to come for a second round. Second round I was invited there (this was London) and was super nice work environment. Good coffee, snacks, nice recruiters. We (was a group interview) were listening to a presenation. first. Then did language test. Then did "fake" phone call with a client. Then personal interview with the manager of your particular team. They had LOT of questions, this whole process was quite very long.
phone interview for about 20 mins with HR
language test on a laptop
group interview with HR to share your work experience and motivation and goals etc.
role play and case analysis and discussion with other candidates
meet face to face with managers
kind and friendly atmosphere overall