I know Helensburgh very well as my aunt lives there.I was in Scotland a few months ago, in Dumbarton watching a football match.
I used to spend my school holidays with my grandmother and aunt in Dumbarton and Helensburgh.My cousin went to a very minor public school called St. Brides in Helensburgh, it is mentioned on FR but there are no CP memories.I saw this cousin at Christmas with her mother, and oddly her mother kept on threatening to smack her bottom! I said I could do that.