Download here- http://www.twcenter.net/downloads/db/?mod=710
This is the only mod currently out that allows you the chance to play as the Romano-British. They are a challenging faction to play, and only a champion can achieve victory.
Features:
These mods are in the mod, giving it many features
Borsook's- Bi Enhancment
Seluckos's- New Bi Map
and Lusted's-Roman Skin Pack
All of these contribute to the mod immensly and are a large difference between v1.5 and v2..
The romano-British now can properly recruit ballistaes and onagers.
For all the information please check out the Pax Britannia V2-Play as Romano British thread.