The Raiders for Dux Britanniarum is an expansion to the main rules which introduces three new factions to the game; the Irish, the Scotti and the Picts as well as rule variations for the British Kingdoms of the North, the Gwyr Y Gogledd. This 44-page supplement features rules to cover the new factions, as well as beautiful colour maps of Ireland and Scotland along with campaign rules for the Raider nations.