There was a short call with HR then a 1h technical interview and then a 1h call with 2 managers. There were only theoretical java questions, they didn't ask me much about my experience.

I applied on November and the process finished near the end of December.First part of the process was the application. After a couple of days I received a mail to book a phone interview. The phone interview was mostly about behavioural questions and included 10 questions about Java. If we passed we were given a programming test. Although after a couple of days we were told we shouldn't do it and that we automatically passed..After a week I was invited in the Assessment Centre. We were divided in two groups. The first part included a small presentation of ourselves. Then we had a 1-1 interview that included mostly behavioural questions. Then we had a group presentation about the implementation of a scalable betfair exchange site. Last part was a technical test that included Fibonacci, a method to find the unique characters of a list using hashmap and another one I don't remember. Overall it was a nice experience.

Brief telephone interview covering my previous work experience, some basic programming questions and a couple of behavioral ones. Next stage was to do a programming test at my own time. Final stage was a face to face interview at Hammersmith Headquarters. It consisted of three parts, covering lots of behavioral questions (what would you do if x happened or tell us one time that you faced x problem and how you dealt with it) and programming questions regarding the programming test.