Jo Hallmark

Legal Director

London

Jo is a Legal Director in the Specialist Liability team and joined DAC Beachcroft in 2025. She commenced her career in 2001 and has a wealth of experience in dealing with personal injury matters on behalf of a variety of organisations, now focusing almost exclusively on complex and niche claims arising out of social care on behalf of local authority clients.
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About Jo

Bio
  • Biography

    Jo has represented Defendants and their Insurers since 2001, handling a wide range of complex personal injury claims and litigation.

    Jo has a unique insight and understanding of the inner workings of local authorities following an in-house client-lawyer tenure at a London Local Authority, acting as their Interim Claims Manager for 3 ½ years. Whilst in this role, Jo worked with all Directorates and managed liability and casualty claims brought against the Council, including those involving issues of utmost sensitivity and complexity.

    Since returning to practice, Jo has focused her career on building a specialist claims and litigation service for local authority clients, covering sensitive and niche claims arising from recent and non-recent abuse and neglect, breach of civil liberties, child sexual exploitation (CSE), mental health law, GDPR, children/adult social care and other novel points of law.

    Featured Experience

    • Multi-party litigation involving complex points on common law and human rights, involving CSE and alleged failures to prevent harm by third parties in the community.
    • Claims arising out of child fatalities.
    • Alleged failure of a local authority to protect a young person's Articles 2, 3, and 4 ECHR rights resulting in them suffering gang related violence on two separate occasions;
    • Judicial Review involving a Local Authority's failure to provide s20 CA 1989 accommodation resulting in an unlawful deprivation of liberty.
Sector Expertise
  • Government and Public Sector

  • Insurance

  • Social Care

Service Expertise
  • UK Casualty

  • Civil Liabilities, Public Bodies and Specialist Liability

London

  • 25 Walbrook
  • London
  • EC4N 8AF

+44 (0) 20 7242 1011

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