The battle drew to an obvious conclusion within few more turns. Victory awarded to the crown due to the losses suffered by the rebels. I staged a quick repeat and honours were more even. The British light battalion fought hard but were worn down by determined rebel skirmishing and limited cavalry charges. The arrival of the 23rd and von Bose prompted a rebel skedaddle to the river. Targeting turned up late and despite some aggressive charges by the 17thLD and Legion he was unable to cut off the retreat. Honours even with a slight edge to the rebels I think. If only tartlet on had arrived on time (3 failed order rolls) or the 23rd had advanced faster! They each got to the river only to see the last rebel rearguards making it over the bridges.
Might try a slightly less sylvan scenario next.