Ad a) Regarding the question on location of data centres, please see again the answer to Question 10. As indicated in Annex I - Part 2 Technical Specifications, page 9: 'In general, the contractor shall implement the EU root CA and supply its services to C-ITS stakeholders in Europe following the rules defined in  and . Since this tender establishes a vital component of the European trust model for C-ITS as described in  and  with several operational implications and responsibilities, the EU root CA, as well as internal EA and AA shall be setup and fully operated by the contractor on the territory of the European Union. This means that the deliverables of this service contract (e.g. storing and processing of data, operation of the PKI entities, provision of certificates as well as all handling of interaction with stakeholders) shall be done on the territory of one or several (if distributed) Member States of the European Union.' Data centres in the context of the EU Root CA, EA and AA would hence fall under the scope of this requirement – the ‘solution’ must be hosted on the territory of the European Union. Territory of the European Union means that such data centre must be hosted in one of the 28 EU Member States. Ad b) Regarding the United Kingdom based tenderers, please refer to Annex I to the Contract - Part 1: Administrative Annex, page 3: 'For tenderers established in the United Kingdom: Please be aware that after the UK's withdrawal from the EU, the rules of access to EU procurement procedures of economic operators established in third countries will apply to tenderers from the UK depending on the terms of the Withdrawal Agreement. In case such access is not provided by legal provisions in force tenderers from the UK could be rejected from the procurement procedure.' Therefore, depending on the UK's exit, or not, from the EU, and the UK's later accession to the GPA.