Alfonso Carrillo is a founding partner at Mirlo, where he heads the Litigation and Insolvency department and leads the Arbitration practice.
A lawyer since 2005, he has over twenty years of experience, having spent more than fifteen years at national and international firms in Madrid, seven of them as a partner leading the Litigation and Insolvency area. Previously, he was a partner at Bird & Bird and at Broseta Abogados.
Alfonso specialises in resolving complex disputes, particularly those involving insolvency situations or high-stakes commercial conflicts. He has extensive experience in commercial, real estate, construction, banking, sports and insolvency litigation. In the field of arbitration, he has acted as party counsel, arbitrator and tribunal secretary, serving as an arbitrator in various national courts such as the CAM, CIMA, CEA, LaLiga's Football Arbitration Tribunal and the Spanish Sports Arbitration Court of the Spanish Olympic Committee.
Alfonso speaks Spanish, English and Italian.
-
Advanced Practice Course for Arbitrators, CIAM-CIAR, Madrid. 2024.
FIFA Executive Programme in Sports Arbitration, Madrid, Buenos Aires and Zurich. 2023.
Advanced Course in Arbitration, Universidad San Pablo CEU. 2016.
LL.M. in Corporate Legal Advice, IE Business School, Madrid. 2009.
Master's Degree in International Legal Practice, Universidad de Murcia. 2006.
Law Degree, Universidad de Murcia. 2004.
-
Professor of Insolvency Law and International Insolvency Proceedings, Universidad Carlos III de Madrid.
Professor of Banking Procedural Law, Master's in Legal Practice, IE Law School.
Professor of Alternative Dispute Resolution: Mediation and Arbitration, Universidad Rey Juan Carlos.
Professor on the Advanced Specialisation Course in Civil and Commercial Litigation, Universidad Complutense de Madrid.
-
Arbitrator at the Madrid Court of Arbitration (CAM), the Civil and Commercial Court of Arbitration (CIMA), the Spanish Court of Arbitration (CEA), LaLiga's Football Arbitration Tribunal (TAF) and the Spanish Sports Arbitration Tribunal of the Spanish Olympic Committee.
Member of the Spanish and Ibero-American Arbitration Club (CEIA).
Founding partner and board member of the Spanish Insolvency Law Club (CEDI).
Member of the Sports and Entertainment Law Working Group at CIAM-CIAR.
"Sports arbitration and judicial review in the EU: the RFC Seraing case", LA LEY mediación y arbitraje, no. 24 (co-author with Andrés Borja Alcaraz Riaño), July 2025.
"Restructuring plans six months on", Actualidad Jurídica Aranzadi, no. 996, May 2023.
Chapter "E-Sports" in Derecho de los videojuegos (eds. Andy Ramos and Enrique Ortega), Thomson Reuters Aranzadi, 2023.
"Goodbye to the creditors' meeting", Expansión, November 2022.
"Mbappé's renewal and the effectiveness of financial fair play", Cinco Días, May 2022.
"Land Registry issues in bankruptcy proceedings and productive unit transfers", doctrinal article, 2021-2022.
"How will the CJEU rule on the dies a quo for claiming amounts derived from mortgage-expenses clauses?", Revista AJA, no. 976, July 2021.
"The insolvency virus and how to flatten the curve of bankruptcy proceedings", Expansión Jurídico, April 2020.
Speaker at the conference on Arbitration and Insurance at the UIA International Arbitration Congress, Current Perspectives – 2nd Edition, Bilbao, April 2018.
-
Litigation and arbitration
Compensation Board and property developer. Legal representation in a claim for construction defects and damages arising from a contract for the execution of urban development works against a construction joint venture.
British financial services firm. Handling of mortgage enforcement proceedings and opposition proceedings relating to a portfolio of property assets in Spain.
Property developer. Legal representation in an action for the division of common property and judicial auction proceedings against another property developer.
LaLiga Football Arbitration Tribunal. Arbitrator on a panel in sports arbitration between professional football clubs concerning financial rights arising from player transfers.
Construction company. Representation in arbitration administered by CIMA concerning a dispute arising from a contract for the construction and modernisation of irrigation infrastructure against a public body.
Insurance group and operator of senior living. Claim for breach of contract against a property developer in a ‘build-to-rent’ project intended for use as assisted living accommodation.
Multinational company in the raw materials and metals sector. Representation in international arbitration administered by the International Court of Arbitration of the International Chamber of Commerce (ICC) concerning an international contract for the sale of goods governed by the Vienna Convention (CISG), conducted entirely in English.
Spanish Court of Arbitration (CEA). Appointed as sole arbitrator in commercial arbitration concerning a dispute between a company and an insurance provider arising from a credit and non-payment insurance policy.
Madrid Court of Arbitration (CAM). Appointed as sole arbitrator in property arbitration concerning a dispute between members of a owners’ association.
Insolvency and Restructuring
Investment fund. Advice on the acquisition of a hotel business unit in insolvency proceedings, including property, employment and insolvency due diligence, structuring of the bid and analysis of contingencies.
Mexican financial institution. Representation of a financial creditor in the insolvency proceedings of a business group involving investment funds. Bringing liability claims against de facto directors.
International investment fund. Acquisition of a historic building in Barcelona through a strategy involving the enforcement of mortgage loans held in an NPL portfolio against an insolvent company.
International group in the health and wellbeing sector. Comprehensive management of the business group’s insolvency proceedings, including a collective dismissal, preparation of a bid for a business unit and coordination of insolvency proceedings for subsidiaries in different jurisdictions.
Investment fund. Preparation and submission of a binding bid for the acquisition of a business unit belonging to an energy and industrial group in insolvency proceedings.
Financial institution. Strategic advice to a financial creditor on the refinancing and restructuring of debt owed by a mining group in a pre-insolvency situation.
Property company. Defence of the debtor in insolvency proceedings relating to a declaration of breach of a restructuring agreement against a bank.
Private developer. Advice on the termination of a construction contract, repossession of the property and defence against a construction company in a pre-insolvency situation regarding a luxury detached house.