Application, online numeracy & logic tests, phone/personal interview, assessment centre. The online tests are the same that you get elsewhere, and can be practised using online material. The phone interview is entirely competency based ("Tell me about a time when you did X.") and require no knowledge of the company. That said, displaying some knowledge in your answers or during your questions at the end will be appreciated. The assessment centre is held in London together with five other candidates. Candidates are not competing against each other and supposedly they will hire anyone who meets their criteria. Similar to other graduate schemes, Shell will preferably hire people with experience despite the nature of these programmes. An economically sound choice for the company, but you should be aware of this going in to the selection process. Make sure you have at least some relevant-ish work experience.