Things have moved on a little.
It wouldn't justify getting a NAS drive for the use we give it.
Things have changed though.
I can now see the laptop on the desktop and access all files and folders perfectly.
The laptop however still cannot see itself or the desktop but can see all the other network devices such as printer, TV, router, CCTV pvr.
I have double, double checked all of the settings and permissions and even used the Network Reset option to no avail.
Still it's progress of a kind.