JUNIOR PROFILE
Marlene Cayoun

Marlene Cayoun

UK Bar 2026

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Ranked in 2 practice areas

About

Provided by 1GC|Family Law

UK Bar

Practice Areas

Marlene is an award winning, sought-after junior barrister with a specialist practice in children law and in large-scale public inquiries.

Marlene is in demand as a junior in large-scale public and private inquiries. She has been instructed as Counsel to the Inquiry in the Covid 19 Inquiry (focussing on the impact of the pandemic on Children and Young People), the Independent Inquiry into Child Sexual Abuse and the Infected Blood Inquiry. She presently acts for a Core Participant in the Post Office Horizon IT Inquiry, and assisted Charles Geekie KC in Chelsea Football Club’s 2019 Review of Non-Recent Child Sexual Abuse.

In her children private law work Marlene acts for parents and children in a wide range of 8 Children Act 1989 applications, including those which feature serious allegations of abuse, require a rule 16.4 guardian, relocation, and where special guardianship orders are sought. Marlene has significant experience in international cases where child abduction, jurisdictional complications, cross-border adoption and surrogacy arise (including in the application of the Human Fertilisation and Embryology Act 2008). Marlene also regularly acts for parents and children involved in Hague Convention applications.

In her children public law work Marlene represents parents, children and Local Authorities in Children Act 1989 Part IV and V applications, including those with serious allegations of abuse, neglect, fictitious or induced injury, and child sexual abuse and exploitation. She regularly represents parties involved in adoption applications and challenges.

Career

Called to the bar in 2012

Professional Memberships

ALC

FLBA

Honourable Society of the Inner Temple

Chambers Review

Provided by Chambers

UK Bar

Family: Children - London (Bar)

Band 3
Band 3

Individual Editorial

Marlene Cayoun has assisted with historic abuse inquiries of the most serious and sensitive nature, both led and unled. She also handles matters concerning adoption and international abduction.

Inquests & Public Inquiries - London (Bar)

Band 4
Band 4

Individual Editorial

Marlene Cayoun has been instructed as counsel to high-profile inquiries, including the COVID-19 Inquiry and the Infected Blood Inquiry. She is also noted for representing a core participant in the Post Office Horizon IT Inquiry.

Strengths

Provided by Chambers

  • She is very responsive and excellent at drafting complicated orders quickly. Her forensic and analytical skills are also very impressive.

    Family: ChildrenUK Bar
  • She deals sensitively and adeptly with complex children cases. Marlene is highly eloquent and persuasive both on paper and in her oral submissions.

    Family: ChildrenUK Bar
  • Marlene Cayoun has got a really good way of cutting through issues and a really nice manner with clients.

    Inquests & Public InquiriesUK Bar
  • Marlene has the brilliance of mastering the detail, and she is brilliant at working out what is important. I have always enjoyed working with her.

    Inquests & Public InquiriesUK Bar
  • Marlene Cayoun is incredibly smart.

    Inquests & Public InquiriesUK Bar

Ranked Barristers at 1GC|Family Law (59)

All Circuits

  • Profile image of Andrew Bagchi KC
    Andrew Bagchi KC

    Court of Protection: Health & Welfare

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  • Profile image of Malcolm Chisholm
    Malcolm Chisholm

    Court of Protection: Health & Welfare

    View profile
  • Profile image of Janet Bazley KC
    Janet Bazley KC

    Family/Matrimonial: Non-Court Dispute Resolution

    View profile
  • Profile image of Claire Heppenstall
    Claire Heppenstall

    Family/Matrimonial: Non-Court Dispute Resolution

    View profile
  • Profile image of David Burles
    David Burles

    Family/Matrimonial: Non-Court Dispute Resolution

    View profile

London (Bar)

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