Welcome to Blackstone Legal Costing UK Ltd

Blackstone Legal Costing UK Ltd is a boutique firm of Costs Lawyers representing Claimant Solicitors in complex, high-value costs disputes. We specialise in catastrophic injury, medical negligence, and birth trauma cases, offering a precise and strategic approach to costs recovery.

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Decades of legal costs experience
Specialist focus on multi-track litigation
Trusted by leading claimant firms
Decades of legal costs experience
Specialist focus on multi-track litigation
Trusted by leading claimant firms
Decades of legal costs experience
Specialist focus on multi-track litigation
Trusted by leading claimant firms

Our Services

Preparation of detailed Bills of Costs

We prepare clear, well-structured Bills of Costs.

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Replies to Points of Dispute

When costs are challenged, we prepare persuasive and well-reasoned Replies to Points of Dispute.

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Detailed Assessment Advocacy

We provide representation at detailed assessment hearings in the Senior Courts Costs Office and regional courts.

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Costs Management

Strategic support with costs management and the preparation of costs budgets.

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Negotiation & Mediation Support


We support clients through all stages of negotiation, including Part 36 offers and mediation.

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Whether you’re planning ahead for costs budgeting or responding to Points of Dispute, we can help you take the right next step.

Why Choose Us

  • Decades of legal costs experience
  • Specialist focus on multi-track litigation
  • Trusted by leading claimant firms
  • Personal service, every step of the way
  • Strategic insight with technical precision

Meet the Founders

Rebecca Humble

Rebecca is Co-Founder of Blackstone Legal Costing UK Ltd and a qualified Costs Lawyer with over 25 years’ experience. She is Co-Editor of the Costs Law Reports and is regularly instructed in high-value and technically demanding costs matters.

She has worked extensively on legal costs arising from personal injury and clinical negligence claims, including those involving serious and catastrophic injuries. Through Blackstone’s close connection with its Australian counterpart, where she also practised, she brings an international perspective that informs her approach to complex costs matters. Known for her strategic judgement, commercial awareness, and clear communication, she is trusted by clients to advise on the most challenging costs matters.

Teresa Glynn

Teresa qualified as a Fellow of the Association of Law Costs Draftsmen in 2004 and was among the first to qualify as a Costs Lawyer in 2007. She founded Partners in Costs in 1996 (now PIC Legal) and brings extensive experience across all aspects of legal costs.

Teresa is a Director of Blackstone Legal Costing UK Ltd and also serves as Director and Compliance Officer for Legal Practice at Andrew Isaacs Law, a specialist family law firm.

Reuben Glynn

Reuben qualified as a Fellow of the Association of Chartered Certified Accountants (FCCA) in 1999 and has held a number of senior leadership roles, including Director at Partners in Costs Ltd and Chief Executive Officer of A&M Bacon Ltd.

He is a Director of Blackstone Legal Costing UK Ltd and also serves as Director, Compliance Officer for Finance and Administration, and Money Laundering Reporting Officer at Andrew Isaacs Law Ltd, a specialist family law firm.

Let’s Work Together

If you’re looking for trusted experts on legal costs, we’d love to hear from you.