Royal Sussex County Hospital
The victim, a man in his fifties, is in a life-threatening condition.
A 15-year-old boy was stabbed to death in a separate incident in Slough just hours later.
The victim was punched in the face.
23-year-old arrested on suspicion of attempted murder
A jury recorded "serious failings".
'On this particular day... the cupboard wasn't locked.'
'We don't know how it happened.'