WHERE: Modern England, Scotland and Wales.
ORGANIZATION: Region (homogenous but not united)
FORMAL RULER: -
POLITICS: There are many tribes of varied strength and importance. They feud, trade and ally with each other as circumstances and the whims of their leaders dictate.
DON’T: Discrespect the druids or the tribe you visit.
FIGHTING: Carrying weapons is quite alright and quite common, as is brawling. Serious fights with weapons are discouraged by custom and whatever strong locals are at hand. But if two people agree to a duel, it's a spectator sport.
NOTED DANGERS: Forest banshees, savages
NON-CANONICAL INSPIRATION: The Celtic tribes at the time just before the Roman conquest are fairly well known (although sprinkled with controversies and mysteries as with all research on ancient lands) and form the framework of this area. I’ve added a sprinkling of other legends here and there (Arthurian and other).
Note: the map is somewhat
large. This is because most of the places named in the series are close
to each other in southern Britannia. It was either a large map with large
areas without much to see (yet), or a smaller map of only parts of the
island. After some thought I decided that a small, truncated map would've
been too misleading.
Eire is
included on this map since sizeable parts of it would've been visible anyway.
ALPHABETICAL LIST OF PLACE
NAMES USED
Atrebates: 
a Celtic tribe.
Cadbury:
a town of Dumnonia, fortified against both neighbouring tribes.
Caervaddon (Bath):
famous baths and temples.
Calleva:
the pre-Roman capital of the Atrebates. A major trading town.
Camulodunum:
the capital of the Catuvellauni.
Cantiaci:
a Celtic tribe from pre-Roman times, lots of iron mines.
Carlyon:
City of Lions, the capital of Lyonesse.
Carvetii:
another Celtic tribe.
Castle of the Pierced
Heart: because of the not-so-subtle Arthurian vibes, I put it at Glastonbury.
Headquarter of the Knights
of the Pierced Heart.
Catuvellauni:
a Celtic tribe from pre-Roman times. Very rich.
Celtic Amazons: this
tribe is slightly less xenophobic than their Greek counterparts but equally
martial.
Cirencester:
the capital of the Dobuni.
Connaught:
This spiritual tribe is the traditional rival of Ulster.
Coritani:
another pre-Roman tribe. Peaceful farmers mostly, but there are rumous
of dragons.
Cruachan:
capital of the Connaught realm.
Dobuni:
a Celtic tribe from pre-Roman times.
Dumnonia:
a Celtic tribe from pre-Roman times.
Durovernon:
a castle-city in the middle of a swamp and the capital of the Cantiaci.
Emain Macha:
the capital of the Ulster tribe.
Forest of the Banshees:
since the Castle of the Pierced Heart is said to be there, it had to be
here.
Gate to Annwyn:
mythic entrance to the Underworld. One of several possible locations according
to interested scholars.
Iceni:
pre-Roman tribe. Boadicea was queen here for
a while.
Iverni:
A tribe used to trade with southern people.
Ivernis:
capital of the Iverni and Eire's principal trading town.
Llanmelin:
capital of the savage Silures and as such barely more than a village.
Luguvalium:
capital of the Carvetii.
Lyonesse:
this mythic kingdom is a staple of all fantasy versions of Britain. The
Isles of Scilly are thought by some to have inspired the legends, so that's
where I put it.
Meath: a coastal
tribe annihilated during a Roman invasion attempt (in season 4 (H:tLJ season
5)).
Mona (Anglesey):
a holy island.
Nagnata:
A fishing town under Connaught rule.
Noviomagus:
a busy port town.
Parisii:
a Celtic tribe, fairly civilized farmers.
Petuaria:
capital of the Parisii.
Ratae:
the capital of the Coritani.
Selsey:
another port, competes with Noviomagus as the main trading port on the
south coast.
Silures:
a tribe of fierce hunters, renowned for their ability to stay awake for
days.
Tara:
capital of all Eire once, now down on its luck but still the capital of
Meath.
Temple of the One God:
placed at the Stonehenge site.
Tintagel:
the main settlement of the Dumnonia tribe.
Venta:
the capital of the Iceni.
Wayland's Smithy:
just what it says: this stone house is the home and workshop of the best
smith in Britannia.
Ulster:
a non-canonical tribe, long-time rival of Connaught.
