OK - awoke to this:

I'm not sure if
GWR▸ are making site changes overnight, or if they have my location / IP at present as a problem. Could have done with a better message, folks, like who the website owner is to contacts
Added - in the interest of constructive criticism, here is "our" forbidden page ...

... and I am happy with it. Where a remote IP address causes a problem, automation adds it to a block list. But dynamic use of IP addresses (people move around just like they do in street addresses, but much more often) means that on occasions a bona fide user finds themselves blocked. I have chosen that our error page tells you who to contact, and gives the information I need to fix the problem for individuals within a couple of minutes. If the site or forum is down as a whole, I can put a general message out in place rather the a "403" or "404".