Grainne Fahy


  • I am a partner and head of family law in London and the South East.
  • I have practised family law exclusively since 2005 and was an equity partner in a London firm before joining BLM.
  • I specialise in all aspects of private family law, including divorce and dissolution, financial remedies, private children matters, trust of land matters, cohabitation agreements, separation agreements, nuptial agreements and enforcements. My client base is medium to high net worth and my cases often include international aspects.
  • My focus is on matrimonial and non-matrimonial finances and I have a wealth of experience in cases with extensive assets, both in value and quantity.
  • I also act in Children Act matters and currently have 100% success rate in international relocation cases.
  • I am accredited by Resolution as a specialist family lawyer with particular specialisms in Private Law Children and Advanced Financial Provision 1.

Notable cases

  • Litigated and then ultimately settled complex multi-million Trust of Land matter involving 27  properties
  • Successfully represented claimant in same-sex Trust of Land dispute, with a 100% costs award
  • Successfully represented applicant in an interim account application, with a 100% costs award
  • Financial and private law children proceedings involving three European jurisdictions
  • Recently litigated and won with costs a s37 application in relation to the transfer of land in financial proceedings
  • Acted for wife in financial proceedings with assets in excess of 23m with company assets across 3x jurisdictions
  • Negotiated and drafted pre-nuptial agreement for high net worth client with cross jurisdictional assets
  • 100% success rate on Leave to Remove applications to date


  • A fellow of the International Association of Family Lawyers
  • A specialist Resolution accredited lawyer in private law children
  • A specialist Resolution accredited lawyer in Advanced Financial Provision 1

Contact Details

+44 20 7865 3397


The team at BLM are a cut above the rest. Grainne Fahy provides a very professional, thorough, knowledgable service and I would gladly recommend her in dealing with you and taking you through those challenging situations that warrant her expertise, guidance and insight.


Grainne Fahy literally saved the life of this mother and her two children. From the moment I reached out to her she was the epitome of excellence in every way. She took me by the hand and led me through treacherous waters with expert skill and compassion.


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