@M Druiett
Hi Michael,
It worked ok for me, in Yorkshire.
Sometimes the NLS web site is very slow and Templot times out before the site responds. It's worth waiting a while and trying again.
It's possible that a security or antivirus program on your computer is preventing Templot from accessing the NLS web site, although I haven't had any reports of such a thing.
I have captured the map tiles for you, attached below for 2mm/ft scale. I combined them into a single picture shape, and twisted it 90 degrees for an easier fit on the screen. Templot can twist it to any other angle if you want.
Ask again if you need more help using the NLS maps.
cheers,
Martin.