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

Family, Children & International Family + View All Specialist Areas

In Ireland Hilary has conducted over 250 family law divorces. Hilary regularly delivers CPD lectures to Barristers and Solicitors' firms and speaks at various conferences and seminars internationally. She delivered a family law course over 3 months to Shearman & Sterling LLP, Skadden, Arps, Slate, Meagher & Flom LLP, Reed Smith, Ropes & Gray LLP, Travers Smith and Gibson Dunn. Family clinic here

Publications and Media

  • Article "Rape as a Tool of War" Solicitors Journal, July 2017
  • Lecture YResnational, Weightmans Manchester "Maintenance Unmarried parents" June 2017
  • Article, The Times, "Victims of Rape in Conflict Zones should not be stigmatised" June 2017
  • Webinar "New Divorce bill", February 2017
  • Seminar Target Jobs Law National Pupillage Fair. October 2016
  • Radio Interview - The Brief – Legal Affairs Show – Near FM 90.3FM – February 2014. Andrew Robinson BL and Patrick Leonard BL. on the European Court of Human Rights' Irish landmark case of Louise O'Keeffe. 
  • Article - The Bar Review (Roundhall) Journal of the Bar of Ireland – Volume 18 – Issue 6 - December 2012. “The Innocence Project Summer 2012”.
  • Article - The Irish Times - 26th November 2012. “When the Law is a matter of Life and Death” This was an interview by Pamela Newenham journalist of the Irish Times to discuss myself and 2 other barristers' experiences with the different Innocence Projects in the USA. 
  • Radio Interview - The Spin – Spin FM 103.8FM Radio - Novemeber 2012. “Lunchtime show with Jonathan and Clare” Radio on DNA evidence in criminal trials. 
  • Article - The Law Society of Ireland Gazette – Cover Story November 2012 edition. “Shaken Baby Syndrome Science or Myth?” The American Criminal Justice System has been using forensic science and techniques to successfully convict people, which has never been scientifically validated. Is Shaken Baby Syndrome a science or myth based on the triad of symptoms alone?
  • Radio interview - The Brief – Legal Affairs Show – Near FM 90.3FM – 29th November 2012. “The Brief with Andrew Robinson BL and Patrick Leonard BL” Radio DNA applications in US Courts. 
  • Article - The Law Society of Ireland Gazette – July 2011 edition. “Breaking up is hard to do” On 1st January 2011, the clock began to tick for cohabiting couples in Ireland to acquire rights from one another as a result of the commencement of the Civil Partnership and Cohabitants Act 2010.
  • Article - The Family Law Journal – Trinity edition 2011. “Grandparents' Rights in Ireland” This article focuses upon the legal issues surrounding grandparents rights in Ireland.