Thanks Mardigan.
Yes the HYW context gives plenty of possibilities for diplomacy, negotiations, and sometimes treason, between player characters, and one or two of them may be hesitating between the pro-French and the pro-English side (in the case of petty nobles or villagers PCs) or may represent the interests of another power (Navarre in the early HYW, Burgundy later) and of course you may always add a bandit player character, etc.