The 'cycle lane' that runs - well, limps, more like - round Vauxhall roundabout is an obstacle course enough. You have to give way every five seconds to side roads, wait at a dozen lights, and often dismount and push.
But this morning it was even more of a challenge. First, because of the sign (right) helpfully advising cyclists that they have to move to the side, to avoid the sign advising them to move to the side.
Second, because of the van (right) delivering tiles.
Well, that's appropriate: Vauxhall roundabout is enough to make anyone's eyes glaze over.