Defence Holdings PLC develops and acquires defence technologies, focusing on AI-enabled systems, cyber-defence, secure communications, autonomous drone systems, and critical infrastructure protection. The company’s platform model allows rapid development and deployment of solutions across multiple defence domains, including AI agents for defence operations, information and influence warfare, drone warfare and aggregation, and critical infrastructure defence. The company was formerly known as Cassell Capital Plc and changed its name to Defence Holdings PLC in May 2025. The company was incorporated in 2019 and is headquartered in London, the United Kingdom.