Barrister Justin Slater

Justin Slater

Year of call: 1999  


“We would have no hesitation in recommending Justin as one of the best junior counsel available in child care work”

Ben Harling, Solicitor, Borneo Martell Turner Coulston LLP Solicitors



Justin Slater practices as a trial advocate within the full spectrum of child law from complex private law disputes, including those cases with a jurisdictional element such as relocation cases, through to public law matters where the children are separately represented, in Wardship, and where issues involving the Hague Convention and Brussels II Revised are relevant.

His particular expertise lies within public law care and adoption proceedings where he receives a balance of instructions from public authorities and lay parties alike. He has a significant talent dealing with experts and the cross-examination of vulnerable witnesses involved in suspected sexual abuse, or where serious violence within the family has taken place, including those where children have been directly and seriously harmed.

Justin also has significant experience and brings a professional understanding to cases where issues of mental health or cultural and religious sensitivity arise.

Justin is known for his ability to engage with clients, his clarity of advice, and an ability to steer a ‘route to home’ through what are invariably difficult times.

“Justin is empathetic and has an excellent approach with clients. His advocacy is both determined and measured. We would have no hesitation in recommending Justin as one of the best junior counsel available in child care work.”
Ben Harling, Solicitor, Borneo Martell Turner Coulston LLP Solicitors

Child & Family

Child & Family

Care and Adoption proceedings continue to develop as a complex area of child law and Justin’s experience as a trial advocate is employed by both public bodies and private individuals alike in seeking to determine the best outcome for children. Justin brings a significant level of experience and expertise to what are often distressing cases and increasingly cases where time is of the essence. Justin assists at all stages in proceedings from pre-proceeding conferences where he is happy to give advice to local authorities as to ‘next steps’, through to appeal where that is appropriate.

Increasingly, and reflecting the growing number of families with non-British nationality, Justin appears in the High Court where there are jurisdictional disputes. He has been involved in significant cases both private and public law based, where the Court has had to decide Hague Convention / Brussels II Regulation questions before or as part of the process in determining any final resolution.

The protection of children and the vulnerable is always at the heart of Court decisions in this arena and as such Justin has experience with all the tools at the Court’s disposal including the use of Forced Marriage Protection Orders, which he has both obtained and resisted on behalf of clients. Beyond the purely legal elements of such applications, Justin has a ready insight as to the types of familial issues at play and the practical pitfalls which are to be avoided.

Justin frequently appears in Court of Protection actions particularly as they relate to vulnerable youngsters involved with local authority care, with sound knowledge and experience in challenging the provision of services or the need for any local authority to share parental responsibility.


  • Family Law Bar Association
  • Association of Lawyers for Children

Child & Family Cases

  • Re SR (a child) [2018] EWCA Civ 2738: successful appeal against sexual abuse findings in care proceedings where in the first instance, the Judge failed to properly consider the context of the statements made by the child, the cultural context of the words used, and gave improper weight to police questioning of the child in the absence of an ABE interview.
  • Re N [2013] EWHC 1433 (Fam): Decision of Mrs. Justice Theis DBE providing an analysis of case law decisions in respect of Habitual Residency where the parents argued Jurisdiction was with France. Her Ladyship also emphasised the need for early cooperation between Central authorities and the prioritisation of a fluid exchange of information, “such requests should be made promptly, to ensure there is minimum delay“.
  • KZ v AM & Others: Decision of Miss Alison Russell QC sitting as a Deputy Judge of the High Court as she then was, in circumstances where the child was wrongfully retained in England on or about 1st October 2011 and where the Maltese courts had refused to transfer jurisdiction pursuant to an earlier Article 15 request: the child was habitually resident in the jurisdiction of England, the Applicant had known of the whereabouts of the child since his wrongful retention, a period in excess of 1 year, the child is settled in England, had not issued an application for his return to Malta, and in consequence and pursuant to Article 10 (b)(i) Council Regulation 2201/2003 the jurisdiction of the Maltese Courts ended and England had jurisdiction pursuant to Article 8 Council Regulation 2201/2003.

How to get in touch

For more information please contact our clerks by calling +44 (0) 20 7242 3555 or by email.

Privacy Notice

Justin is committed to protecting and respecting the privacy of individuals. In order to provide legal services, including advice and representation services, Justin needs to process personal data. This will include client’s personal data and the personal data of others who feature in the course of any matter upon which he is instructed.

Justin will process personal data in accordance with his Privacy Policy.

Please click here to see how Justin will, absent any other arrangement with those instructing him, fulfil any Joint Controller responsibilities he may have under relevant data protection legislation.


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