Is it time to start calling out bad cyclists?

Why is it impossible to ride in primary without some complete bell-end taking it as an invitation to pass between yourself and the kerb in the most stupid circumstances?

On this occasion, following a line of traffic down Highgate West Hill at 20-something miles an hour. Fortunately I heard/saw him coming so left plenty of room (in hindsight I should've shut the door), but what really annoyed me is once he'd passed me there was nowhere else for him to go. He sat a few feet behind a Passat estate, which I was secretly hoping would brake suddenly for one of the many speed bumps so I could point and laugh while the inconsiderate cretin was picking bits of rear windscreen from his face.

I didn't 'call him out', since past experience shows people get offended at you daring to suggest they'd done anything wrong, followed by blaming you for riding 'in the middle of the road'.

TBF (if you're in the middle of the lane) the amount of space left either side of you is simply too inviting for a fellow cyclists. The polite thing to do if undertaking would be to say I'm passing on your left. I draw the line at undertaking me if I'm riding on the cycle lane border.