However, Harrold said he's noticed one area in which Prince William differs quite a bit from his grandmother. "The late Queen always used to say that she put monarchy over family," he said. "Admittedly she did occasionally put family first in ways that contradict this, but she did say it often. I think William is very different."

Whilst the princess has completed two consecutive engagements across two days since revealing her cancer diagnosis, Kate is marking a major milestone by staying overnight in Scotland this evening. The couple will be heading back to their children in Windsor tomorrow.

Rather than marking their anniversary at home, the Prince and Princess of Wales, one of the world's most glamorous couples with Hollywood star appeal, will return to Scotland for