Lady Arden and Lord Kitchen take oaths of office, with quarter of judges now women Two new justices have been sworn in at the supreme court on the opening day of the legal year. A quarter of its judges are now women. Lady Arden and Lord Kitchin took their oaths of office for the UK's highest court on Monday. Arden's husband, Lord Mance, who recently retired as deputy president of the supreme court, was among those present.