These proceedings report on the organisation and a sample of recent activities of the various Diversity and Inclusion offices in the four major Large Hadron Collider (LHC) experiments. We briefly describe CERN’s historical role as an example of international diversity in science, then discuss how additional efforts by the experiments have positively affected the research, as well as establishing an important example to current and future generations. In addition to descriptions of initiatives by the LHC collaborations, we present some important progress by the CERN D&I Programme, including initiatives launched in cooperation with the LHC collaborations and/or with other dedicated CERN entities, such as Women in Technology, LGBTQ+@CERN, the Disability Network and the Supporting Neurodiversity at CERN Network. Each one of these initiatives moves the laboratory and its experiments one step closer toward creating an equitable environment allowing all parties a chance to contribute their own individual strengths toward advancing fundamental research and making an important and lasting impact on society today.