In his private practice of law, Lord Daniel Brennan QC specialises in commercial law, international business issues, public and private international law, and international arbitration. During 1999, he was Chairman of the Bar of England and Wales, the organisation that represents over 10,000 practicing barristers—specialist advocates and advisers in litigation. In 2000, he was voted Barrister of the Year and the Queen, on the recommendation of the United Kingdom Government, appointed him a life peer and member of the House of Lords.
He is a Deputy High Court Judge and Crown Court Recorder, and a former member of the Criminal Injuries Compensation Board. He has a high profile international and commercial practice that spans the globe. He also has an extensive international litigation and advisory practice involving bi-lateral investment treaty and commercial and energy work in South America and Asia.
Lord Brennan is currently the Bar representative on the Council of the International Bar Association. He is also a member of the London Court of International Arbitration and a member of the Arbitration Foundation of South Africa, as well as a member of its Appeals Panel. He is also on the panel of consultants to the World Bank for Latin America and South and East Asia.