Petards Group plc provides security, surveillance, and communication technology solutions across four key markets: Rail, Traffic, Defence, and Communications. In the Rail sector, it develops software-driven video and sensing systems for on-train applications and safety-critical software for UK rail infrastructure. The Traffic division offers Automatic Number Plate Recognition systems and mobile speed enforcement solutions to law enforcement agencies. In Defence, Petards supplies electronic control systems and engineering services primarily to the UK Ministry of Defence. The Communications segment acts as a systems integrator, delivering critical communication technologies and ongoing maintenance services to various sectors, including transport and government. The company operates primarily in the UK and internationally, serving a diverse customer base that includes government agencies and commercial clients.