This report outlines the research and engagement activities carried out during the Discovery Phase of the Standards for Official Statistics on Climate-Health Interactions (SOSCHI) project in 2022-23 and the main findings from those activities. SOSCHI is a four-year project, established in February 2022, led by the UK Office for National Statistics (ONS) and financially supported by Wellcome. In the Discovery Phase, we focused on understanding the needs for official statistics on the health impacts of climate change among different types of users and identifying existing indicator sets and statistical resources about climate and health. Correction notice: Title page updated on 13/11/2024 to correct for typo in title. DOI also updated to latest version. Please refer to document version 1.1.