Playing as Britannia in the singleplayer campaigns?

I dont know how to be the British in the imperial campaigns why is it that I can only be the romans? its stupid.

I've tried using the cheat from https://forums.totalwar.org/vb/showthread.php?t=38671

I use the cheat "Control" (Faction) so I type in "Control Britannia" and it doesnt work so does anyone know ANY way how to play as Britannia?

You need to complete either a short camaign as one of the roman factions to unlock tthe other factions (Or a longer one if you prefer). Or alternitivly eliminate that faction to play as them

Yeh you have to beat Cmapaign first,

OR

just move the unlockable factions and nonplayable factions into the playable factions in the descr_strat1 file

rome>data>maps>imperialcampaign>descr_strat.txt

move all of the factions except the rebels into the playable section at the top, and delete them from the nonplayable

Or download the complete faction mode at :

http://www.twcenter.net/downloads/db/index.php?mod=75