Thousands of people have signed a petition to keep a children's cancer unit open in south London.
The NHS is reviewing services at the Oak Centre for Children and Young People at the Royal Marsden in Sutton.
The hospital doesn't have its own children's intensive care unit and a recent review suggested that for safety, if they can't build one, the whole unit is moved a 30 minute drive away to St George's in Tooting or the Evelina Childen's Hospital in Westminster.
George has spent many days and weeks at the Royal Marsden. His parents say they are struggling to cope with the added stress of the situation.
It's not just the expertise that concerns parents but the logistics and costs.
The unit was only opened nine years ago but the NHS now has six months to look at its options, balancing safety, risks, benefits and costs, while the unit would prefer to stay put.
To read more about the 'It Must Be Marsden' campaign, click here.