that's not how it works at this junction. There are more bikes than cabs by a factor of ten - or more. Bikes gather at the front. Cabs race around the right and cut in to the bus lane about 400 metres up. Gaz was waiting for that to happen because he's seen it before, but if the cab driver hadn't cut Gaz up he would have cut somebody else up. So.....are all the cyclists (and there are often thirty waiting at this particular light) supposed to pull to one side and let the cab by?
sorry, and I should have said - the problem arises because of the bus lane. I'm a big fan of bus lanes, but in this instance it would be sensible to do the thing they've done in Upper Street and ban taxis from the red tarmac to the northeast of the junction. What happens is the cyclists gather at the front, the cabs go in to the centre lane (which is the bus lane) and when the light goes green they try and pass the cyclists without moving in to the right hand lane any more than they have to, and then, once the stationary buses just to the west of the junction have been passed, they turn in to the left to miss the right turn lane at Union Street and to take advantage of the bus lane toward Clapham North. It's not the world's biggest problem because we are many and they are few, but it is routine. So, we, all of us, watch out for the horrors, and, happily, you can mostly hear them coming.
When I'm on my own I travel pretty much at the speed limit, and there is no way the suckers are going to cut me up. When I'm with Agent Hilda I ride ahead and outside of her (usually on the Brompton) and, if a cab comes up behind me, give the driver the eyebrow of disapproval until such time it's safe to pass - taking account not only of my position, but those cyclists who are ahead of me.