 Lord Brennan is Chair of the APPG on Legal and Constitutional Affairs, which is a cross party grouping of MPs and Peers with Parliament focussed on discussing issues relating to the legal profession and the reform of the law and constitution.He has an environmental, product liability and medical negligence practice involving multi-party actions such as the insurance claims from the Paddington rail crash, the combined oral contraceptive pill litigation and, in the past, the local residents' claims arising from the Canary Wharf development scheme, the HIV/haemophiliac claims against the UK government and the Herald of Free Enterprise disaster.Most recently he has appeared in the 'designer baby' appeal in the House of Lords.