Serco Group plc is a British company providing public services. It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index. The company has four divisions: Health, Justice and Immigration, Transport, and Defence, and operates across the UK and Europe, North America, Asia Pacific and the Middle East. Serco primarily provides public services to governments, including the operation of prisons and hospitals, defence and aerospace services, and transport services. The company also provides IT and consultancy services to the public sector. Serco has been involved in a number of controversies, including allegations of overcharging the UK government and mismanagement of contracts.