Sorry for the delay answering. I had not realised that the thread had moved to a second page.
From step 7 of the guide, I used:
One thing I did wonder though is that this guide seems to be written for Raspbian Stretch and as far as I know, my version of Raspbian is earlier.
Will that make a difference. I am wary about changing the main settings on my micro SD card, in case it loses my VNC licence details, as I use my Pi headless.