I've just been for a run in the woods, nice and shady.
I came across two horse riders, two abreast on the path. So I slowed right down and moved to the far left handside of the path, expecting them to go to single file to enable us all to pass comfortably. I thought I'd done the right thing.
One of the riders put her hand out for me to stop, which I did and they continued on their way.
I realise it's not the biggest issue in the world and I wasn't planning to push hard in the heat anyway. I appreciate it's in no one's interest to spook a horse, but shouldn't they have stopped and/or moved aside if their horses equire that kind of care, rather than expecting it of others? What if I had been a dog or a child and less compliant?
I also thought the requirement was that the slower more vulnerable user , i.e. me! had priority. Pedestrians, horses then cyclists. As a runner I always give way for walkers and as a cyclist for everyone.