In my area, English Pleasure is a class at shows around here that is based on the horse's movement/gait, headset, and a bit of conformation as well. Like wise, the 'opposite' class is English Equitation, which is mainly based on the rider- heels down, toes up, chin up, straight back, correct diagonal...etc. Usually, in our pleasures classes, it ends up being 75% on the horse and 25% on the rider. In Equitation, it usually is 90% on the rider, 10% on the horse. It's kinda weird. :)
Anyway, that's what it means to the people at our barn, I'm not sure if this is what you were thinking of.