it's william guy vestey, the eldest son of samuel and cecilia vestey. to violet henderson with whom he has, yes, one daughter. fascinating! and fortunately, this royal wedding, you don't need any of these to stay in the know. this is who's who. it's a website for phones and desktops that uses artificial intelligence to automatically recognise all of those royal wedding guests. from the famous to the more obscure, each guest's face is tagged with their name and some background info. plus, the tool lets you skip around to watch your favourite guests arrive. built by data company greymeta and broadcast by sky news, it's the first time they have used facial recognition for a live broadcast. who's who, our royal wedding project, was an opportunity to use machine learning and artificial intelligence to find a different way of telling a story. we knew that with celebrities, viewers would be able to identify them without the software. we also knew there were large numbers of members of the royal family, particularly the extended royal family, who, while public