CMS Cameron McKenna Nabarro Olswang LLP

CMS Cameron McKenna Nabarro Olswang LLP, trading as CMS, is an international law firm that provides a broad range of legal services to corporate, financial, institutional and private clients. It advises on matters such as mergers and acquisitions, banking and finance, regulatory compliance, dispute resolution, intellectual property and employment law across sectors including energy, infrastructure, real estate, technology and life sciences. The firm’s Spanish practice, branded CMS Spain, delivers domestic and cross‑border legal assistance, drawing on the wider CMS platform for specialist expertise when needed. Clients benefit from the firm’s ability to combine local market insight with the resources of a global legal network.

The organisation’s headquarters is located in the United Kingdom, as stated in the supplied context. It maintains a dedicated office in Spain to serve clients operating in the Iberian market and to support international transactions involving Spanish entities. While the prompt does not disclose specific figures for headcount, revenue or office count, the firm’s presence in multiple jurisdictions indicates a transnational operational footprint.

CMS is recognised for its sector‑focused teams, particularly in regulated industries such as finance and energy, which enables it to offer tailored legal solutions. The firm’s approach integrates deep local knowledge with international capability, allowing it to handle complex multijurisdictional matters effectively. In Spain, the CMS practice leverages the network’s expertise in European Union law and cross‑border transactions to assist clients with regulatory and commercial challenges. The collaborative model encourages lawyers from different jurisdictions to work together on client matters, aiming to deliver seamless and coordinated service.

Structurally, CMS Cameron McKenna Nabarro Olswang LLP is a limited liability partnership registered in the United Kingdom. It is a member of the CMS network of independent law firms that share the CMS brand, quality standards and best practice frameworks while remaining separately owned and governed. The Spanish office operates as part of this network, adhering to the same governance principles while also complying with local Spanish legal and regulatory requirements. The cyberattack reported on 1 December 2023 affected a limited number of storage servers within the firm’s Spanish operations, an incident that was contained to that subset of infrastructure without public evidence of wider network disruption.