Chemring Group PLC manufactures and supplies advanced technology products and services for aerospace, defence and security markets, operating through two primary segments: Sensors & Information and Countermeasures & Energetics; the Sensors & Information segment develops electronic countermeasures, biological and chemical threat detection equipment including point chemical detectors, JSLSCAD, I-SCAD, R Visor and 3D radars, explosive hazard detection systems and consulting services, while the Countermeasures & Energetics segment produces expendable countermeasures for air and sea platforms, pyrotechnics, munitions, cartridge/propellant actuated devices, missile components, propellants, separation sub-systems, actuators and energetic materials such as HMX and MCX for missile and space applications. Founded in 1905 and headquartered in Romsey, UK, the company maintains extensive operations across the Americas, Europe including Norway, the Middle East and Asia-Pacific, serving national defence organizations, security agencies, law enforcement and commercial sectors like space and transport, with North America accounting for the majority of revenue. Recent developments include the completion of the Landguard Group acquisition on 29 August 2025 for up to £20 million to enhance Roke's software defined radio and security capabilities; a 15-year partnering agreement in June 2024 with Northrop Grumman for HMX supply including an initial $83 million order; a 12-year framework agreement in November 2024 with Diehl Defence for MCX energetic material featuring a €231 million initial purchase order; a five-year $65 million sole-source framework contract for Chemring Energetic Devices; a multi-year UK Ministry of Defence STORM missile defence contract awarded to Roke in April 2025; and progression of a joint feasibility study with the Norwegian Government for expanded military explosives production capacity.