IIRC, Mick Jagger was a student/grad of London School of Economics
I have a friend who had a social (wives including Jerry Hall were included) dinner with Mick and other local (Dallas) business people. He sat next to Mick and Mick wanted to talk about nothing but business - Mick is a grad of London School of Economics with a Masters in Business to his credit. He is the brains and money guy for the Stones. Without him they would have been long extinct.