A long and intensive process, although it was very well organised. The HR people were very nice and polite and they kept you up to date on the process.
It started with a phone interview, where they went over your CV. I had quite a lot of experience in financial journalism so for me it wasn't too hard. They ask you questions about what you've done etc
Then, some 20 applicants get invited to the London office, which is beautiful but very overwhelming and massive. You're group is split into two, and half of you have to do a test while the other half has to go for the interviews. The test wasn't too hard. You had to name some FTSE 100 companies, name some executives, write out acronyms, write short news articles and flash headlines. You're also asked to write a short essay on a financial topics.
The interviews were quite intimidating but should be fine if you're a journalist and used to that stuff. They asked some tough questions and sometimes got a bit off topic, which wasn't really helpful.
The most frustrating thing about the interview process was that when it was over, they told me I 'just' didn't make the cut, and I asked them what I was lacking, what had gone wrong or what they thought I was missing in terms of skills and experience and they didn't give me any feedback (even though everything was recorded), they just urged me to apply for more jobs within the company as the HR woman said she thought I would fit in nicely.