Sir Stirling suffered a bad accident. Lady Moss said that although Sir Stirling is not in good shape, he is no longer in danger.

As a result of a malfunction of the lift in their home, the lift doors opened on the third floor when the lift was waiting at the fourth floor. Sir Stirling stepped through the doors on the third floor and dropped three storeys down the lift shaft to the concrete base.
   
He broke both ankles and four bones in his feet in the fall, as well as suffering damage to some vertebrae. Amazingly, he did not suffer any internal injuries.
   
He was initially admitted to the London Hospital and then moved following the intervention of Professor Sid Watkins to Princess Grace Hospital, where he was operated on.
   
Lady Moss says he is in remarkably good spirits and already complaining about the size and quality of the hospital breakfast!