The judicial review committee of the House of Lords is the UK's highest court, except that it isn't technically a court. So, technically, that honor belongs to the Court of Appeal of England and Wales , which is why the Master of the Rolls, the head of the Court of Appeal, is the ranking judge in civil cases. The ranking judge in criminal cases is the Lord Chief Justice, which always makes me think of Gilbert and Sullivan. In Scottish criminal cases the highest court is the High Court of Justiciary. The High Court is a lower court than the Court of Appeal, although not the lowest court. And in all cases except those which go to the Judicial Committe of the Privy Council, the Judicial Committee of the House of Lords is, in effect, the UK's Supreme Court. Indeed, Prime Minister Tony Blair intends to take the Judicial Committee out of the upper chamber (the Law Lords are really Lords and they sit in the House of Lords — and even participate in debates relating to some legal matters), and replace it with a separate Supreme Court.
Anyway, whatever you may call it, the amazing thing is that the Judicial Committee/House of Lords/Supreme Court has never had a woman among its members. Until now: 'Incisive judge' becomes first female law lord.
'bout time.