I'm looking for a Charles Johnson, the only information I have is that he was in the Merchant Navy, and lived at 41 Giffin Street, Greenwich, London from 1947 - 1950. He may have lived there after 1950, but I only searched the Electoral Register for this time span.
As I don't have a date or place of birth, I'm finding him very difficult to trace. At present I'm checking through the National Archives Merchant Seaman Records, which is just guess work with no birth record.
Any help provided will be greatly appreciated.