Hilary Lennox

Year of Call: 2008

Hilary specialises in international human rights and family law.

Our specialist clerks can be contacted by email on clerks@5sah.co.uk or phone on 020 7332 5400. To contact our Chambers Director directly in relation to a specific members’ practice, please email dscothern@5sah.co.uk


Hilary Lennox is a barrister called to the Bar in Ireland in 2008, Northern Ireland in 2013 and England & Wales in 2013. In addition she has worked in a law firm in New York and the Innocence Project in Wisconsin.

Hilary specialises in international human rights and family law. Hilary is instructed to bring cases on behalf of individuals before the European Court of Human Rights most recently against Ireland. She speaks French, Spanish and Irish.

Hilary is a highly experienced family practitioner across three jurisdictions. She covers all areas of family law. She is regularly instructed in international child abduction, child relocation and international jurisdictional issues (habitual residence) before the High Court most recently involving Syria, Libya, South Africa, India, Tanzania and Australia.

Hilary represents local authorities and provides advice involving care and placement proceedings, Article 15 Brussels II revised transfers of international families most recently in the Czech Republic, Germany, Poland and Ireland. She represents parents, guardians, intervenors and the Met Police involving children who have suffered long term neglect and sexual abuse.

Hilary acts for a wide range of matrimonial financial clients in particular high net-worth as well as modest clients with complex financial arrangements. Some cases involve large property portfolios in several countries including USA, Kenya, Nigeria, Pakistan, Turkey, Portugal and India. She receives instructions and lectures in Schedule 1 Children Act maintenance applications for unmarried parents. 

Hilary successfully represented the family of a client (22) in the Court of Protection. He was seriously injured and left in a permanent vegetative state arising from an accident on a Russian Oligarch's yacht in the mediterranean. His family as well as solicitors were court appointed deputies in both financial and property affairs and personal welfare. She is also involved in the ongoing international personal injury claim. Media here.

Direct Public Access

  • Hilary accepts direct public access instructions in suitable cases.

Professional Memberships

  • Criminal Bar Association
  • Chatham House
  • International Bar Association Human Rights Institute (IBAHRI)
  • Bar Human Rights Committee
  • Liberty
  • Extradition Lawyers Association
  • Family Bar Association

Criminal Prosecutions + View All Specialist Areas

Hilary prosecutes and defends a wide range of criminal cases throughout the Crown Courts and Central Criminal Court in London involving fraud, violent and sexual crimes. She receives instructions from a variety of prosecution agencies, including the CPS, DWP, Probation Services, County Councils and Serco Monitoring. Serious Fraud Office, Disclosure Counsel on LIBOR (Yen) Tom Hayes prosecution and Private Prosecution DAS Disclosure Counsel.