'It was the darkest period of my life - Johnny Depp on daughter Lily Rose's illness
Johnny Depp described his daughter's time in hospital at London's Great Ormond Street as "the darkest period of my life".
Sixteen-year-old Lily-Rose was admitted to the children's hospital for nine days in 2007 for kidney failure caused by E.coli poisoning while Depp was filming at Pinewood Studios.
Speaking to Graham Norton about returning to the hospital to cheer up patients dressed as his Pirates of the Caribbean character Captain Jack Sparrow, Depp said: "For me it's a gift. They give me the gift.
"When my daughter was ill in Great Ormond Street it was the darkest period of my life.
"I'd always done these visits but after that experience the visits became more and more important.
"The kids are so courageous but to be able to bring a smile or a giggle to the parents means everything in the world to me."
The actor is in London to promote his new film Black Mass in which he plays Irish American crime boss James 'Whitey' Bulger and joked that he had his eyes set on a knighthood in the capital.
Benedict Cumberbatch stars alongside Depp and joined him on Norton's sofa to discuss his recent fatherhood in the show, to be broadcast tonight.
Musical entertainment was provided by The Corrs, who have reunited after a 10-year hiatus.