Fair play, no argument there, being a keen cyclist myself here is one for us lot. I can't stand militant pedestrians who give me the death stare when I'm riding on a pavement that has clear signs saying pedestrians and cyclists allowed.
I think cyclists have a duty of care towards the pedestrians that they're careening towards on these dual-purpose pathways. Many's the time I've been walking the mutt and one has zapped past me, nearly clipping the pooch or decapitating himself on the extendable leash. I wish they'd slow down and let people know that they're there before attempting to pass.
I also dislike cyclists that think these dual purpose pathways are governed by some sort of Highway Code. On one occasion I was cycling along and approaching a little old lady with her wee pooch on a longish lead. So I slowed down and moved to my right, only to come face-to-face with one of those God-awful Wilfred-Bramble-in-Lycra types who, after ensuring that our front tyres bumped before stopping, then uttered through gritted teeth, "we keep to the left in this country, young man!" I weighed up the situation, considered my options, contemplated the most suitable repost, before delivering "go **** yourself, you Lycra-clad twat!" The little old lady hurried by and the aforementioned Mamil went quickly on his way.
Oh, and people in general.
