Allen & Overy is now advising the parents of Harry Dunn, the British man killed in a car collision with the wife of a U.S. diplomat earlier this year.

The elite law firm has taken up the case after a recent High Court ruling found that the driver of the car, Anne Sacoolas, did have diplomatic immunity at the time of the crash, when she allegedly drove on the wrong side of the road and hit Dunn riding a motorbike.