Catherine , Duchess of Cambridge - Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge arrive for an official visit at the Enterprise Centre at Harrow College. - Harrow, United Kingdom - Saturday 10th October 2015 (1 Picture)
Catherine and Duchess Of Cambridge
Next Kate Middleton Slideshow: Duchess of Cambridge out in London - London United Kingdom - Thursday 17th September 2015
This Doctor won't be saying 'goodbye' in the same way as those who have left the series in recent years.