Many thanks for the help. Shame that I can't stop the icons being shown when I choose that option.

The room colour/object colour didn't really help because, where tables are up against each other, the separation isn't there.

It would be nice for there to be an option to print outlines so the print of the plan is just what is shown (with/without grid). In the end, I just disabled the grid, zoomed in and took a screenshot.

Cheers