Gibb has been battling colon and liver cancer and recently developed pneumonia. Earlier this week he was admitted to hospital again and could not attend the premiere of his stage production 'Titanic'. His brother Barry has flown to London to be by his side. His wife Dwina, and children Melissa, Spencer and Robin-John are keeping vigil by his bedside.
Robin's son Robin-John told the BBC, 'He is still in hospital, he's fighting infection and of course ' as a lot of people who have family members or friends who endure cancer, they know ' there are a lot of periphery problems afterwards they have to deal with,'
Robin has been in and out of hospital for the past year. In October, 2011 he had emergency surgery for a blocked bowel, the same condition that killed his twin brother Maurice at the age of 53.
Doctor's say with Robin's current situation he may only have days to live.