I don’t have much experience with mental illness, especially severe mental illness, but I just got in from a bus ride to Woolwich where there was a person with clear mental health issues on the bus. From where I was sat their gender was not clear, but they were obviously very upset about something, talking noisily and erratically to themselves.  I can’t help wondering whether anyone should have done something. My fellow passengers left the person alone, but should they have interfered? Had the person had any other kind of disability and been so obviously in trouble, I would hope that they would have been helped. If it was me, say, and my powerchair had broken, I would obviously be grateful for assistance. While the person wasn’t causing any trouble or threatening anyone, perhaps one of my fellow passengers, or even the driver, should just have gone up to them and asked if they were okay. What is the right thing to do in such situations?