Model Naomi Campbell said it would take time to come to terms with the death of Nelson Mandela and that he had given her "a reason for being" during difficult periods in her life.
Campbell said: "Nelson Mandela has stood as a figure of strength, hope, freedom, selflessness and love, and I join everyone across the world in mourning his passing.
"However, he was much more than just a figurehead to me - he was my mentor, my honorary grandfather, my Tata.
"Since meeting him in 1993, he's guided me and gave me a reason for being in the tough times of my life. He changed my perception of the world."
Six-year-old Emma Williams was invited to sit on Nelson Mandela's lap when he visited Wales in June 1998. Now 22, she speaks to ITV News.
Nelson Mandela touched aspects of British public life in a way that very few other international figures have managed.