OK, that confirms that your home directory permissions are incorrect.  Not sure how that happened, possibly by an inadvertent chown command.  Note that you need to be careful when using shell commands because your user name has a space character in it, so you have to be sure to enclose it in quotes in the shell ("Steve Margetts") and there may be third-party scripts that don't handle that case well; generally, it's best to avoid using spaces in the Unix login name.  Anyway, there are several ways to correct the problem but it looks like the easiest might be to use a procedure that Apple provides to reset permissions.  It is described here:

https://www.macobserver.com/tmo/article/os-x-repair-home-folder-permissions

Good luck!