4thgenphil wrote: no lights and no high viz in winter seems to be really popular in norfolk at night on main roads !
Yes
If the cyclist is a gentleman's sausage and decides he's going to ride home after work/whatever on country roads or main roads with no hi-vis clothes, then I generally pass them like a gentleman's sausage. My personal favourite is the genius who wears green, or even better--the fishers that wear camo and ride along a tall hedge at sunset.
Horses, I am cautious of whatever the situation. I've seen an A5 leaflet in the road freak out a horse. A few years back I was hooning as they say (using this term loosely as I was in a 1.3 Swift) through some country roads, came around a bend and a drokking Transit was stopped on one side of the road talking to a horserider on the other side, still have no idea how I managed to get between them at ~national speed limit without clipping either.
Runners, drokk 'em. If you want to run on the road when there are plently of perfectly suitable footpaths, pavements, parks and gyms, then you're an utter penis. Hi-vis or not if you don't move then you will be passed with minimal care.
EDIT: To be relevant to your question though, if they're suitable dressed and know what they're meant to be doing, then I pass them considerately.