I wasn't able to glean from your post whether you were in fact blocking the cyclist's route?
Sorry, I'm probably going to get shot down by this given the response you've had so far, but I'm surprised that you post a rant about "bloody cyclists", when you were driving…on a cyclists forum.
I can see where you're coming from, but you're on a cycling forum…right? I mean I'm bemused that you posted this here, but I'm really disturbed that more people haven't asked you more questions (why were you driving to work in central London anyway? Again, this is a cycling forum!) before rounding on the cyclist?
Also, I know from personal experience that the police in Shoreditch are really anti-cyclist, they're quite threatening to cyclists verbally, and don't pursue investigations of potentially criminal conduct even when there's quite compelling evidence, taking the driver's word against that of the cyclist where it's his word against theirs. Sort it out.