Cyclist are under no obligation to do this, lets not forgot that. There is nothing in the highway code about this, I would suggest that often cyclists ride too close in to the kerb allowing drivers to get by when perhaps they shouldn't.
Spot on. There is no obligation for us to ride on the slippery yellow lines, or bounce over the man-hole covers. When I passed my HGV training, I was taught that where you were was YOUR bit of road - as a cyclist, I always keep a distance between me and the kerb so that motorists have toTRHINK about whether they've got room to pass me, rather than just squeezing by, assuming I'll move even closer to the kerb or even stop to let them get by. It works a treat........