The Duke of Cambridge started studying a history of art course at St Andrews University in 2001. However, just like many students who move away from home to study, the Prince experienced a “wobble” and spoke to his father about his second thoughts.

       In his book, Battle of Brothers, royal author Robert Lacey claimed William wanted to drop out.

       According to the author, the future King asked the Prince of Wales if he could switch universities, with Edinburgh as an option.

       Charles's spin doctor at the time, Mark Bolland, told the royal expert: "It was no different from what many first-year students go through.

       "We approached the whole thing as a wobble, which was entirely normal.

       "St Andrews had a flexible course structure and when they heard that William might be happier majoring in geography, they made sure there were no roadblocks."

       But royal aides urged Charles to "demonstrate more fatherly backbone" with his son.

       At the time, Prince William described his experience as a first year university student as being “daunted”.

       He told Press Association: "I was like most people, I think, when you first come to university.

       “It’s new surroundings, new scenery, and I wasn't quite sure what to expect.

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