Cataphract, Clibanarii, whatever, against Infantry

[Dan Howard]

a line of light infantry was sufficient to counter them in the roman period.

“It was seen that our troops were too heavily weighted in armour to deal with such an enemy: they could not pursue them when they retreated and dared not get separated from their standards. The cavalry, too, found it very dangerous work fighting the charioteers; for the Britons would generally give ground on purpose and after drawing them some distance from the legions would jump down and fight on foot, with the odds in their favour.”[Caesar, B.G. 5.16]

From the above one could conclude:
1. That chariots could keep out of reach of the infantry.
2. Roman formations were ineffective against British chariot tactics.
3. The British charioteers considered themselves at a disadvantage when facing cavalry, and so dismounted to fight on foot.

Based on this one would conclude that the best way to handle British chariots was with cavalry - close on them before they can disembark and form up.

Note that British chariots were not used for shock tactics. They acted as skirmishers and would be more effective against light infantry.