"Approaching a roundabout
In OP's case the way was not clear for the car that followed hers onto the roundabout and it collided with her car in the rear when she braked. The following car:
To the OP use the above from the RSA in any follow-up action you need to take against the offending driver who struck your car.
- Conditions at roundabouts may vary. When you’re coming up to a roundabout, look for directional arrows, road markings or signs which might be indicating which lane you should use for the exit you’re taking.
- Move into the correct lane in good time. use the 12 o’clock ‘golden rule’ to help you plan a safe course of action unless road signs indicate otherwise.
- Treat the roundabout as a junction, yield to traffic coming from the right, but keep moving if the way is clear."
In OP's case the way was not clear for the car that followed hers onto the roundabout and it collided with her car in the rear when she braked. The following car:
- Had no business on the roundabout
- Failed to stop in time to avoid a collision
- And didn't comply with the three Cs - care, courtesey and consideration
To the OP use the above from the RSA in any follow-up action you need to take against the offending driver who struck your car.