I'm amazed that despite that 57% that are 'distressed but coping', the Samaritans that I've been in contact with in their capacity in this role have fobbed off the 'distressed but coping' once they've worked out they're not suicidal.
Certainly this was my experience of the Samaritans. We talked for a while and they asked me if I was suicidal, if I had an eating disorder etc etc. Once they worked out I wasn't suicidal, they said 'ah, well, if you ever do become suicidal, remember we're always here' (yes, really). Well, cheers.
I do admire the OP for wanting to give their time in this way though.