The Comisión Nacional de los Mercados y la Competencia, abbreviated as CNMC, is a Spanish independent competition regulator responsible for enforcing competition law. It was established by virtue of the Spanish Competition Act. It was preceded by the Tribunal de Defensa de la Competencia until 1 September 2007.

ACS, Actividades de Construcción y Servicios, S.A. is a Spanish company dedicated to civil engineering, construction, all types of services and telecommunications. It is one of the leading construction companies in the world, with projects in many countries around the world. The company was founded in 1997 through the merger of OCP Construcciones, S.A. and Ginés Navarro Construcciones, S.A. The group has a presence in the United States, Germany, India, Brazil, Chile, Morocco and Australia. The headquarters are in Madrid and the chairperson is Florentino Pérez. Listed on the Bolsa de Madrid, the company's shares form part of the IBEX 35 stock market index.