3 week process, applied online. Long psychometric tests and many text fields to fill in (though no cover letter required). Was then invited for a phone interview with many competence-based questions.
initial application, numerical test, situational test, phone interview. Phone interview is mainly competency based test. Questions such as why BP and not other energy giants? And about how you fit in with their values.
2 part process beginning with behavioral and leading into case to test technicals. Overall great process and interviewers were great at communicating. Very approachable as well and good at answering questions.