As part of its Brexit preparedness work, the Commission announced that it is taking the necessary operational steps to ensure business continuity and preserve the security of the Galileo satellite navigation system after the withdrawal of the United Kingdom from the European Union. The Galileo back-up sites located in the United Kingdom’s territory are being transferred to the EU. The two Galileo Sensor Stations located on the Falkland and Ascension Islands are being removed. The Galileo sensor stations located on the Ascension and Falkland Islands host cryptographic material/EU classified information, which in accordance with the EU security rules is not allowed to be located in the territory of third countries, unless relevant agreements are in place. The removal of these two stations does not affect the overall performance of Galileo services, which remains excellent, as there is sufficient capacity in the system.