Telecom acquired Towerlink Netherlands B.V., Shere Masten B.V. in 2016 and Alticom B.V. in 2017. The three companies have more than 918 telecommunications sites for the distribution of mobile data communication and telecommunications. The main customers interested in telecom infrastructure services are the Dutch mobile network operators KPN, Vodafone, T-Mobile and Tele2. The sites are distributed throughout the country and are managed from their central Reeuwijk office. Cellnex UK Cellnex acquired the telecommunications division of Arqiva in the United Kingdom, adding 8,300 locations to Cellnex in the British market. The agreement follows the announcement in June 2020 of a long-term strategic alliance with BT, through which Cellnex obtained the rights to commercialize and operate 220 high-rise towers distributed throughout the United Kingdom. This alliance entails the acquisition of around 7,400 owned sites and the marketing rights for an additional 900 sites spread throughout the UK. Cellnex thus became the main independent operator of wireless telecommunications infrastructures in the United Kingdom. The agreement also includes concessions for the use of street furniture for the deployment of telecommunications infrastructure in 14 boroughs of London. Cellnex Switzerland Following the agreement with Salt in May 2019, Cellnex manages a portfolio of more than 6,000 sites and is permanently consolidated in Switzerland. Cellnex Ireland In September 2019, Cellnex reached an agreement with InfraVia Capital Partners for the acquisition of the Irish telecommunications tower and site operator Cignal. The company currently operates 546 sites in Ireland, making it the seventh country in which Cellnex operates in Europe. Cellnex Poland In October 2020 Cellnex bought passive infrastructure from P4 (PLAY) later in February 2021 Cellnex bought passive and active infrastructure from Polkomtel Infrastruktura (PLUS GSM) References IBEX 35 Telecommunications companies of Spain