William Aylmer has been a practising mediator for nearly ten years. He was one of the founding members of the CEDR Ireland Mediator Practice Group and he is a Certified Member of the Mediators’ institute of Ireland. William mediates disputes in Ireland and the United Kingdom related to a wide array of commercial sectors including financial services – banking and insurance, commercial sponsorship, shareholding, employment, partnership, rent review and workplace issues.

Professional Background

As Principal at Aylmer &. Co. Solicitors, William specialises in civil and commercial dispute resolution. Prior to setting up his own firm William was an Associate in the Litigation & Dispute Resolution practice at Eugene F. Collins (2000-09), where he led that firm’s promotion of mediation for commercial dispute resolution and represented clients in mediation of claims litigated in the Commercial Court. He has also been an Associate at Malcomson Law where he acted for clients claiming statutory compensation for infection with Hep C and HIV virus through contaminated blood products.

Mediation Expertise

  • Banking
  • Insurance
  • Employment
  • Commercial Contracts
  • Manufacturing
  • Partnership/Shareholder
  • Professional Negligence
  • Property
  • Landlord & Tenant
  • Workplace
  • Sports

Personal style

William has a primarily facilitative style with evaluative elements, deploying exploration of the best and worst alternatives to a negotiated agreement and reality checking as early as possible and repeated as appropriate.

Feedback – Clients

Jon Legorburu appointed William from the CEDR panel in 2011, noting his “good value, high integrity and creativity as a mediator”, following successful mediation.

John O’Connor, Solicitor, Mediator, Notary Public, Dublin has appointed William as a mediator in February 2009 and hired him more than once, noting that he achieves great results, is personable and expert and saying  “William and I have worked on a number of mediations. He is a mediator of choice in respect of his knowledge, patience, commitment and integrity.

Kevin Bonfield, Bonfield Limited, London, while with another company when working with William at Eugene F. Collins, said in April 2009, “I found William’s approach to dispute resolution refreshing and his attention to detail was excellent. I am glad that he has set up Compton Aylmer as this new venture will give him the freedom to develop a strong business which will serve his current and future clients very well indeed. I have no hesitation in recommending William’s services.”

Eileen Grace, Partner Corporate & Banking Group at Eugene F. Collins, Dublin, who managed William indirectly at Eugene F. Collins, said in February 2010, “William is a very experienced lawyer with particular expertise in mediation. William was a very capable colleague and a pleasure to deal with.”

Feedback – Directories

William appears in the International Who’s Who of Mediation Lawyers 2011, having been nominated and selected based on comprehensive, independent survey work with both general counsel and private practice lawyers.

Cited in Chambers Global 2009, the Client’s Guide to the World’s Leading Lawyers for Business, as “one of the most sensible and pleasant commercial litigators around“. It records that William covers an array of contentious cases and is “making great strides” as a mediator.

Dispute Experience

  • Mediator in an insurance contract dispute between a bank and its insurer.
  • Lead mediator in a €600,000 professional service level agreement dispute between an international  financial services company and its professional service contractor.
  • Lead mediator in a family business dispute regarding renewal of commercial leases and arrears of rent.
  • Lead mediator in a €450,000 dispute arising out of an international sport commercial sponsorship agreement.
  • Sole mediator in a workplace dispute between senior management at the Irish business of an international financial services company.
  • Sole mediator in €600,000 international multi-party share sale / earn out / employment contract disputes. Business vendor partners in dispute with each other and with purchaser.
  • Lead mediator in co-mediation of €550,000 commercial insurance sector service level agreement dispute mediation.
  • Appointed by partners of solicitors’ firm to act as sole mediator in their partnership dispute.
  • Sole mediator in commercial rent review dispute, referred to mediation following arbitral award.

Mediation experience as legal advisor

  • Representing minority shareholder in claim to enforce option to sell shares for agreed sum.
  • Representing multi-national environmental sector services company defending €4M product liability suit.
  • Representing partner in firm of accountants where partnership terminated following disagreements.
  • Legal adviser to developer in infrastructure project multi-party dispute mediation.

Professional skills and background

William has represented clients as a solicitor and trusted adviser in civil and commercial litigation, arbitration and mediation since 1994. Highlights of his legal practice to date include representing a multinational pharma company assisting a Commission of Inquiry into post mortem practices in Ireland, acting for a global company in the energy and transport sectors in a Parliamentary Inquiry into a major Irish transport infrastructure project, acting for a subsidiary of a global energy and exploration company in injunction proceedings arising out of its exploration and development activities in Ireland and acting for a subsidiary of a global group in the construction sector in a series of Arbitration and Commercial Court proceedings arising out of a mixed use development in Ireland.

William is an elected member of the Council of the Law Society of Ireland and a former member of its statutory Complaints and Client Relations Committee.  He is also a Member of the Law Society’s Arbitration and Mediation Committee.

Other professional admissions

  • Member Chartered Institute of Arbitrators.
  • Panel mediator, Law Society of Ireland.
  • Panel mediator, Mediators’ Institute of Ireland Civil Liability & Courts Act, 2004 personal injury claims panel.

Founding member of ICMA, the Irish Commercial Mediation Association and member of its Directory of Commercial Mediators.


"He is a mediator of choice in respect of his knowledge, patience, commitment and integrity"


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