I applied online. The process took 1 day. I interviewed at JCDecaux (London, England) in June 2016
Interview
Was a relatively short interview, they called me up and asked me to go in. I spoke one on one to the interviewer, and it lasted approximately 20 minutes or so.
Interview questions [1]
Question 1
They asked me to come up with a promotional installation idea for a product in Central London, and gave me a couple minutes to think of it.