Ventajas
Interns are given a project to work on with specific deliverables, ensuring you are given meaniingful work. The work culture is relaxed and inclusive and I was only ever treated as a valued member of the team. There are a number of develpoment opportunities (Shell has its own database of courses) to take advantage of, and I was fortunate enough to travel to Europe as part of my internship. A successful iinternship leads to being offered a place on the graduate scheme.
Desventajas
Things can often move quite slowly. New ideas are welcomed but it can take an awfully long time for such things to come to fruition. An extensive array of opinions are sought on most activities. On the one hand this avoids mistakes being made, but it can become quite frustrating.