What did the Romans ever do for us? Well, they certainly put the Brits through their paces back in AD 43. Al is joined by ‘Caesar' Bruno Tonioli to look at key battle tactics during the Roman Invasion. From wading through the waves in Roman armour, to seeing how hard it was to invade, to the power struggle the Celts went through to hold onto their identity and just how difficult it is to fire a catapult.