Henry the cat has become popular with hospital patients and staff, despite not being allowed inside.
Henry's owners, who wished to remain anonymous, said he had a loving home nearby."I would try to bring him home, but that never lasted more than a couple of days," the owner said.
"Only animals that support our patients are allowed inside the hospital - they have to have a harness and fluorescent strips," he said. He said he had occasionally been called on to evict Henry from inside the buildings and added: "There would be people who are not happy that a cat is browsing around the hospital, but 99% of people love him."A photograph inspired artist and hospital staff member Thalia Barnes to paint a picture of the cat
"He has been a great sense of therapy and companionship to all those who are graced by his presence," she said.