Charlie has been involved in world federalism since 2016, when he did a masters thesis on the need for a world parliament, and worked as a Campaign for a UNPA intern at the World Federalist Movement in New York. Since then, he has helped with groups such as Democracy Without Borders and the UK-based One World Trust, and was involved in the establishment of the Young World Federalists, of which he is a Director. In late 2021 he also became a founding Director of Democracy Without Borders UK.