This document has been prepared within the ATMO-ACCESS project and, in particular, it is a milestone of the Work package 1 (WP1): “Developing the concept and guidelines for access to distributed atmospheric Research Infrastructures”. The main objective of WP1 is to define a synergistic framework with guidelines and cost scheme for access to atmospheric Research Infrastructures (RI) to enhance user-friendly and easy access to services provided by atmospheric research facilities in ATMO-ACCESS.This milestone compiles information for Task 1.2, “Consolidation of access policies and legal framework for atmospheric research infrastructures” reviewing existing access and data policies in RIs. This information will serve as basis to recommend and define a common legal framework for access provision and use of services.