William 'told journalist Catherine was pregnant with couple's first child before Royal Family'
The journalist said they 'missed a scoop to maintain my friendships'
Prince William
William's 'wonderful' trip to Cornwall after Storm Goretti - Inside the Palace
Royal correspondent Cameron Walker reveals exclusive insight into this week's Royal Family events
Grandmother 'flabbergasted' as William makes blunder during Cornwall trip
The future King was in Cornwall for St Piran's Day
