In 2002 Desmond de Silva attended the opening by the Queen of the Memorial Gates on Constitution Hill. As he was being presented to her afterwards, the Queen interrupted their introduction, saying: “I know exactly who this is.” Looking at him with a smile, she asked: “And what interesting case are you doing at the moment?” “War crimes, Ma’am,” replied the lawyer known in legal circles as the Scarlet Pimpernel for his knack of defending impossible clients. Like the fictional hero, de Silva was tall, a dandy and patrician in his ways, with a rollicking and mischievous sense of humour.

Whether prosecuting Charles Taylor, the former president of Liberia, defending footballers in high-profile cases, leading a review into state collusion in the death of the…