In Germany it was custom to wave at riders going in the other direction and I think it's nice but when you are passing like 50 bikes is 5 minutes it becomes a bit tedious. I don't want to appear to be rude so whatís the story hear in the UK?
Yep most folk do acknowledge each other. If its a big line of folk then I usually just keep my hand up for the first couple. Prefer the little nod myself to the wave. Means you dont take your hands of the bars. I know what you mean about getting a bit annoying after a while.