An element of truth here. As a counter argument I guess you have to know to be able to help sometimes. There are channels for talking to people, Samaritans etc. I know it is more difficult to a visitor to know of where to turn.
Yes, there are many fantastic organisations out there that can help, if people know of there existence and can access them fairly easily. The Samaritans are just one example that could help assuming there isn't too much of a language barrier.
My general point was that however much people see the welfare state in Britian as over-generous and too easy to exploit, the help is purely financial. Beyond that, you're pretty much on your own.
Suicide rates are highest amongst young men who are some of the least likely people to confide in family and close ones when times are difficult.
I fear that there are many, many people out there carrying around their various sacks of misery. To have to lug it along familiar streets is bad enough, but to do it so far from home, it must feel ten times as heavy.