The Saxons came after the Romans. It would have been Celts, Picts and the like giving Jonnus Foreignus a shoeing.Horrible Histories - The Movie; Rotten Romans.
A very well researched and in depth exploration and analysis of Nero, his mother's murder of her husband, Claudius ( played by Derek Jacobi). It examines the hardships of the average Roman soldier, the privations of the Saxons and their unbending refusal to cower before the might of Rome. The back story of Boudicca, her rise as a leader and the depiction of the final battle are magnificent.
Actually, it's a huge pisstake and quite funny. Lee Mack as the Roman centurion is excellent.