Princess Diana: Unseen pictures of 1981 royal wedding auctioned

A collection of behind-the-scenes photographs from the wedding of Prince Charles and Lady Diana in 1981 is to be auctioned in the United States.

The 12 prints capture the newlyweds with senior royals in Buckingham Palace, shortly after becoming man and wife.

Nicholas Witchell reports.

Update 1 September 2015: The video has been removed from this page for copyright reasons