...Using VNC and learning the keyboard shortcuts is probably the best option.
Can you expand on that comment a bit? I have raised a query on the Keysight forum but I've solved the actual access problem, the issue now is scaling on a 4k display.
[EDIT] So I downloaded VNC Viewer and installed, then I was able to connect to MSO7104B and resizing the window scaled the scope picture up so that's the scaling issue solved. But the little control icons at the left (see post above) aren't there. Is this what you meant by keyboard shortcuts to work the scope via the VNC client and, if so, any idea where I can find info on those?
Thanks to all who gave suggestions.