Karen Lennon

Year of call:



2003 - Northumbria University at Newcastle Upon Tyne LLB Hons.

2003 - Exempting Bar Vocational Course at Northumbria University


2003 - Pupil at the Bar Library in Northern Ireland

2004 - Tenant at the Bar Library in Northern Ireland

2007 - Tenant at Dere Street Barristers, York and Newcastle

2021 - Tenant at Park Square Barristers, Leeds


February 2019 - Deputy District Judge, sitting in civil and family private and finance


Family Law Bar Association

Norther Eastern Circuit

Northern Irish Bar

Ranked in The Legal 500 (2023) and Chambers and Partners (2024) for Family and Children Law.

“Karen is very incisive and very good on the law. She is very forensic and not scared to get stuck in and challenge the other side.” – Chambers and Partners (2024)

“Karen fights tooth and nail for her clients. She is bright and a very hard worker.” – Chambers and Partners (2024)

Karen combines a strong intellect with exceptional client care, while maintaining a reputation as a fighter.’ – The Legal 500 – (2023)

“Karen has a formidable intellect and makes her points in a persuasive and nuanced way.” – The Legal 500 (2022)

Public Law

  • Serious Non-accidental Injuries and Child Death
  • Significant Neglect
  • Sexual abuse
  • Domestic Violence
  • Drug and Alcohol Misuse
  • Poisoning
  • Factitious Illness
  • Female Genital Mutilation
  • Representation of children and vulnerable young persons
  • Relinquished Babies
  • Breakdown of Adoption
  • Applications under the Inherent Jurisdiction
  • Protections of Vulnerable Young persons including Dangerous Association
  • Human Rights Applications
  • Jurisdictional Issues including placing Children Abroad.
  • Cases involving cultural or international elements.


Private Law

  • Domestic Abuse and Coercive Control
  • Interfamilial Sexual Abuse
  • Contact
  • Domestic Violence
  • Parental Alienation
  • Implacable Hostility
  • International relocation
  • Removal from the Jurisdiction


With 15 years of experience in family Karen is a heavy weight practitioner who is highly regarded by her colleagues and the judiciary for her breadth of  knowledge and understanding of law and practice, her thorough and analytical consideration of complex and difficult cases and her dynamic approach.

Karen is committed to ensuring the best outcome for her clients and represents with equal tenacity Local Authorities, parents (and other family members) and children (through their Guardian and on their own) in serious and multifaceted cases including; Complex Medical and Mental Health Issues, Serious and Multiple Non-Accidental Injuries, Child death, Sexual Abuse, Poisoning, Fabricated Illness, Neglect and cases involving International and Human Rights issues.

Her professional approach, sensible and considered advice and dedication to her cases keep her in high demand throughout the North East Circuit.


Notable cases:

  • Re L: [2020]:   High Court.   Representation of the children in a care case involving a child death with complex medical and factual issues and where there were considerable breaches of the children’s human rights.
  • Re M [2019]: Care Proceedings; Representation of a mother in care proceedings facing allegations of Factitious Illness involving voluminous medical records with multiple discipline expert evidence was required.  Karen successfully challenged the LA case and the children were returned home.
  • Re S [2018}: Care Proceedings:  Representation of a foreign national parent in Adoption proceedings where the country of origin intervened, evidence was taken from family members and social work assessors from abroad as well as challenges to the use of foreign judgements in UK courts.  Karen successfully challenged the LA case and the children were returned home.
  • Re R [2017]: Human Rights Act: Representation of grandmother in care proceedings where client.  Miss Lennon skilfully challenged the LA and Children’s Guardian and succeeded in having the child placed in her care as well as successfully representing her in a Human Rights Claim against the LA arising out of the LA considerable failings in the case.
  • Re W: [2016]: High Court;  Representation of Adopted Parents in a Adoption Act case where there has been a breakdown of placement and where there was consideration to be given to separating the adopted children.
  • Re: MG [2015]: Brussels II Case.  High Court: Representation of the father in proceedings where the main issue was the habitual residence of the children alongside an application to remove from the Jurisdiction.
  • Re: L & P [2015]: Warship Proceedings; High Court Proceedings where acted for the LA for an injunction under the Inherent Jurisdiction where the risk was risk of sexual harm form association.  Issues were relating to Mental Capacity under the Mental Health Capacity Act 2005.
  • Re: CG [2014]: Representation of the children in International Child Abduction Case.
  • Re: S [2013]: Care Proceedings; Court of Appeal: Acted for father where allegations of sexual abuse were set against allegations of coaching.  The case was appealed to the court of Appeal.  Counsel was lead by Janel Bazley QC
  • Re: C [2012] Care Proceedings: Representation of the father where father successfully applied to reopen a finding of fact.  Counsel was lead.
  • Re S [2011]: Care Proceedings; High Court; Representation of grandparents in case where the father killed the mother with issues as to where the children should reside and contact with the father.
  • Re: M [2010]:  International Law; Represented of the mother in proceedings for permission to remove a child to a Non Brussels II country.



  • Latham O and Lennon K, ‘Consent’ does it matter? [2023] Fam Law 1207

Contact Karen’s clerks

Claudine Cooper on 0113 202 8604

Paul Foster on 0113 213 5209

Arnela Siranovic on 0113 213 5212

Finance – Family Finance

  • Finances on Divorce
  • Trust of Land and Appointment of Trustee Applications
  • Land Tribunal Applications
  • Schedule 1 Applications


In the financial arena she is a discerning advocate who grapples easily with cases involving multi assets, complex business accounts, limited and unlimited companies and partnerships and is regularly instructed in cases involving high value assets.    Karen has represented clients where the asset value exceed six figures.  She is also equally adept at dealing with co-habitation cases with experience in Land Tribunals, applications under TOLATA and Schedule 1 Applications


Karen is a bar representative of the Local Family Justice Board in York engaging and contributing to the meetings and subcommittees and research,  Karen also arranges the annual conference.  She also regularly gives seminars in all areas in which she practises.


Contact Karen’s clerks

Claudine Cooper on 0113 202 8604

Paul Foster on 0113 213 5209

Arnela Siranovic on 0113 213 5212