After the Anglo-Saxon invasion, the Druids of each British tribe came together, uniting under a Confederation and pushing back the Angles and Saxons, re-taking the island for themselves. Afterwords, they would split back into their tribes, staying with the tribal system until the emergence of the Vikings. With reports of these northern invaders, the Druids have once again assembled and negotiated a new Confederation to drive out the invaders and protect the last bastion of the Celts. The British Isles must not fall at all costs. The capital has been made the Isle of Mann, with the Manx leading (Due to having the strongest navy). They are Catholic and they are somewhat similar to the rest of Europe, taking inspiration for large cities and such, but including nature in these cities. :p