I’m a relatively new Boris bike user, only a few months only but I’ve already had an altercation with a black cab driver. I’m sure a similar situation has happened many times for all cyclists when a cab driver pulls over to pick up a passenger without looking.Happened to me on London Wall yesterday; cab driver overtakes me then pulls over to pick up a passenger, I brake hard, skid, swerve into the gutter and just manage to avoid hitting his bumper. Upon complaining about his driving I am told in no uncertain terms – in his own words - ” Cant you see I’m picking up a fare, now fuck off, just fuck off”
I got his number, but is there any use in reporting him ?
Send them in Holland for a training!
Or take their pictures and tumblr them 
Can’t think reporting would harm -the hackney office is quite strict.
You could report them to the Met’s roadsafe team:
https://secure.met.police.uk/roadsafelondon/
They followed up when I reported a pickup that cut me up and swerved towards me.
To be fair I find most cabbies aren’t bad. Adison Lee however….
I didn’t bother reporting him in the end, my anger had worn off the next day. I would have excused him had he said he was sorry, but now my opinion of black cab drivers is much lower.
