I applied in-person. The process took 1+ week. I interviewed at bp (Sunbury, England) in June 2016
Interview
You are invited for an interview and it typically consists of values and behaviours type questions plus technical questions. The answers are scored. You may get additional probing questions. For external interviews there is also some type of an assessment.
Interview questions [2]
Question 1
Tell me about a situation when it was important to listen to a variety of opinions.