(1) Tacitus, The Annals of Imperial Rome (c. AD 118)

Prasutagus, king of the Iceni... made the emperor co-heir with his own two daughters. Prasutagus hoped by this submissiveness to preserve his kingdom and household from attack when he died. But it turned out otherwise. Kingdom and household alike were plundered by the Roman army. His widow Boudicca was flogged and their daughters raped... The Britons enjoyed plundering and thought of nothing else. Bypassing forts and garrisons, they made for where loot was richest and protection weakest. Roman deaths at (Colchester, London, St. Albans) are estimated at 70,000... They could not wait to cut throats, hang, burn, and crucify... Suetonius Paulinus decided to attack without further delay.

(2) Tacitus, On the Life of Julius Agricola (c. AD 98)

The physique of the people presents many varieties; the red hair and the large limbs of the inhabitants of Caledonia proclaim their German origin; the swarthy faces of the Silures, the curly quality, in general, of their hair, and the position of Spain opposite their shores, suggests the passage of Spanish people in old days... Those people, who adjoin Gaul are also like Gauls...

Their strength lies in their infantry; but certain tribes also fight from chariots. Originally the people were subject to kings; now the quarrels and ambitions of petty chieftains divide them; we do not have a more effective weapon than this, they have no common purpose, rarely will two or three tribes join together to repulse a common danger.

Britain produces gold and silver and other metals: conquest is worth while. Their sea also produces pearls, but somewhat clouded.