Medical director of the Royal Free Hospital, Dr Jennifer Cross, has just spoken to BBC Breakfast, saying "it's an enormous challenge" trying to discharge everyone who is ready to go home.
There are currently 275 people in the Royal Free London NHS Trust who are ready to go home, but cannot be discharged because there's not enough support outside the hospital.
"We know being in hospital when you're well medically isn't good for you... so we need those patients home," she says.
They are working with local community groups "to get these beds cleared".
Cross says she would like to see more digital innovation to "do things differently" and use the NHS resources "as well as we possibly can".
She adds a move "towards prevention" would help ensure people stay well and use services less.
"I'm actually optimistic despite the situation and the challenges that we face," Cross says.