Battle of Caer Caradoc
50 CE.
Shown on the map at 52.553°, -2.773°.
The final battle in Caratacus' resistance to Roman rule was fought in 50 AD. The Romans under Publius Ostorius Scapula defeated the Britons and in the aftermath captured Caratacus himself, since 43 the leader of armed opposition to the Roman conquest of Britain. He was paraded through Rome and given the opportunity to make a speech before the emperor Claudius, who spared his life and those of his family and retainers.
Text from the Wikipedia article Caratacus' last battle, licensed CC BY-SA 4.0.