Dozy c**t near dalston junction

um - remember that generally a car braking in front of the car behind would show brake lights, and we don't have any such way of communicating our drop in speed. You have to be aware of how close the vehicle behind you is - if you have overtaken one second he may have caught you up easy the next without changing his speed. If you then slow down suddenly the driver isn't going to have enough distance to drop back. You have to look before any change you make - then if the car's too close sometimes you have to keep on ridin'..

One thing that I do if I have to slow down when I have a car following closely behind
is get out of the saddle. The change in body posture/position let them know something is going on.

My 2 penneth...