Last week FIVE low jets flew over our stallion paddock and the lovely grey horse shown on my profile badly injured his leg
Perhaps this old line needs to be dug out. "Did those jets have red stars on their wings madam?"
As an aside, I regularly ride horses and even though I've ridden in a few low flying hotspots (including LFA's near Odiham) I've never had problems with a horse being spooked by an aircraft. Unfortunately many riders forget they are riding a creature that has a will of its own and instead of paying attention at all times drift off and are unprepared for unexpected eventualities.
The only time I've ever experienced a horse I was riding being spooked it was caused by a very small rabbit popping out of a hedgerow ahead but its also common for horses to be spooked by things as simple as a discarded crisp bag!