Michael Sheen "couldn't explain" the concept of death to his daughter.
The 56-year-old actor - who has Lily, 26, with fellow Hollywood star Kate Beckinsale as well as Lyra, five, and three-year-old Mabli with his partner Anna Lundberg - lost his father Meyrick when he died in May at the age of 85, and admitted that when it came to his younger children, there was "no way" he was going to able to communicate the reality of the situation to them.
