Keystone Law – keystonelaw.com

Keystone Law’s Family & Matrimonial department stands out as one of the UK’s leading practices, offering sophisticated legal advice for every stage of family breakdown. With a depth of experience across high-net-worth divorces, complex financial and children disputes, pre- and post-nuptial agreements as well as international and cross-jurisdictional cases, the team brings both technical strength and human-centred support.

Led by a roster of senior partners with decades of experience and recognised consistently by legal directories such as The Legal 500 as “some of the best and most experienced family law solicitors around”, the department serves clients ranging from business professionals and international families to those engaged in high-stakes asset structures or relocation disputes.

Keystone Law prides itself on delivering clarity and strategic insight at what is often a fraught time. Whether pursuing settlement through negotiation or standing ready for high-end litigation, the practice combines emotional intelligence with commercial acumen, supporting clients through sensitive personal issues while safeguarding significant financial and legal interests. With its London-based platform and national reach, the team is well-versed in handling matters with reputational or global dimensions.

Law Firm Key Information

Year established
2002
Size of firm
100+ staff
Specialist family law firm, or multi-disciplinary?
Multi-Disciplinary
Number of UK offices
6
Awards
The Times Best Law Firms 2023, The Legal 500, Chambers UK,
Accreditations
Resolution

Wiselaw Ratings

Law Firm: Time Established
5.0 
Law Firm: Breadth & Depth of Team
5.0 
Law Firm: Range of Reviews
4.5 
Law Firm: Additional Awards & Accreditations
4.5 

Pros

  • Large family law team with numerous solicitors at Partner level
  • Offers ADR
  • Highlighted as an innovative firm that provides a personal and flexible approach
  • Firm has won a large number of awards across all areas of law
  • Offices across the UK

Cons

  • No option for Legal Aid funded assistance

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Grainne Fahy

Keystone Law     London    

Key info
5.0 score
Recognised Family Law Expert
International Cases
Highly Regarded in High-Value Divorce
Legal 500 Listed
Described as an “outstanding lawyer who is tough but empathetic”, Grainne has an impressive reputation in handling family and matrimonial cases, receiving acclaim for her exceptional legal knowledge and high-quality client care. She handles a myriad of dispute types, often complex in nature, relating to all areas of private...
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