Yep, wouldn't mind if there was an offer to share work and a check if it's ok first. rarely happens, although very occasionally through Richmond Park. More often than not, and the ones that really tee me off, are those significantly slower moving riders who you pass, but who immediately seem to find a new burst of speed to be able to latch onto your back wheelBad form on commutes. Unless the other rider looks 'the type' and you share the work but that's pretty rare... too many other things to worry about than some other numpty.
