My R231 SL had its windscreen replaced today at Autoglass Romford. They could not come to my flat because my SL has the driving assistance package, which means that the camera (for lane keeping assist and speed limit assist) has to be re-calibrated following fitment of a new windscreen. They did a great job. No mess, no damage. They used seat covers. Windscreen fitted perfectly. Everything works as it should. All done in under two hours, as promised. Best of all, a genuine Mercedes windscreen was used. Very pleased. I was quite nervous at the prospect of Autoglass even touching my car.