Kate Garraway's I'm a Celebrity co-star and friend, Roman Kemp, has opened up about the "tough time" the Good Morning Britain star's children are facing following their dad Derek Draper's coronavirus battle.MORE: Myleene Klass reveals emotional story behind Kate Garraway’s son's birthday party Speaking to The Mirror, radio host Roman revealed that he had attended Kate's eleven-year-old son Billy's birthday party over the weekend, and said that he and his sister Daisy, 14, are "going through a