Jonathan is a human rights specialist who represents clients before English and international courts and tribunals and has taken several cases to the European Court of Human Rights.  He has been instrumental in training public authorities and lawyers in the UK on the implementation of the Human Rights Act 1998 and was responsible for devising and carrying out human rights training for various government departments, including the Foreign & Commonwealth Office (FCO) and the Ministry of Justice (MoJ). He has also advised the MoJ and the Home Office on aspects of UK government human rights policy.

He continues to create human rights training programmes which are used around the world. He works closely with the FCO, governments in other jurisdictions, from Ireland to Turkey, as well as international organisations, such as the Council of Europe, on how to implement human rights standards. In 2007 he carried out a comprehensive human rights training programme for judges and prosecutors in the Turkish Military. He has also devised human rights training programmes for Sudanese government officials and also for lawyers in Syria, Cameroon, Gambia, Albania and Lithuania.

Jonathan devised the human rights and terrorism programme and manual for the Organisation for Security and Co-operation in Europe.  He is the editor of one of the leading human right law journals, European Human Rights Law Review, and co-editor (with Prof. Jeffrey Jowell) of Understanding Human Rights Principles (Hart Publications, 2001) and Delivering Rights (Hart Publications, 2003). He also co-edited Legislating for Human Rights, a Guide to the Parliamentary Debates on the Human Rights Act 1998 (Hart Publications, 2000). His most recent book, co-edited with Madeleine Colvin, Human Rights in the Investigation and Prosecution of Crime (OUP), was published in 2009.

Jonathan is the course convener for the highly acclaimed Certificate in International Human Rights Law and Practice organised by the LSE, and is the chair of the Executive Committee of the Human Rights Lawyers’ Association (HRLA). In 2007, Jonathan was awarded an OBE for services to human rights.