Cavaliers and Roundheads is the 19th episode in the series.
Martin is organizing a charity event for the RSPCA, a Civil War enactment battle, but his hopes of being the Cavalier leader are dashed when Paul turns up in full Stuart costume, so he settles for being the Roundhead general. The event will end in a single combat between Martin and Paul, and as Paul has recently had a run of bad luck Martin hopes it will continue on the day. Indeed during the fight Paul falls down, claiming that he has sprained his ankle. Martin has his moment of glory, having bested Paul at something at last - until he gets trampled by a runaway horse.
- Richard Briers as Martin Bryce
- Penelope Wilton as Ann Bryce
- Peter Egan as Paul Ryman
- Stanley Lebor as Howard Hughes
- Geraldine Newman as Hilda Hughes