Some sites geoblock the UK because of our less than sensible laws e.g. imgur.
The following is what I'm seeing exactly, and because it still happens it seems deliberate, not a temporary issue where I was "snake-joking" about earlier. Well… no cute snakes for me.
--- Error 403 Forbidden
Forbidden Error 54113
Details: cache-fra-etou8220097-FRA 1765473610 1384447547
Varnish cache server