The 55-year-old said the knowledge he gained about the disease of severe memory loss and confusion while shooting for the film helped him identify a stranger on the streets with similar problem, reported Daily Mirror.
"I saw this old boy wandering alone. It was a cold day and he was only wearing a vest. I thought, 'He doesn't look well,' I just had a feeling. I didn't approach him, I didn't want to scare him. So I rang the police and they came and got him.
"It turned out he'd wandered off. They found out who he was and took him back. Before I wouldn't have questioned it
