Serco Group plc is a British outsourcing company based in Hook, Hampshire. It operates public and private transport and traffic control, aviation, military weapons, detention centres, prisons and schools on behalf of its customers. Serco has been involved in a variety of controversies having a history of problems, failures, fatal errors and overcharging.

Serco Group plc is a British outsourcing company based in Hook, Hampshire. It operates public and private transport and traffic control, aviation, military weapons, detention centres, prisons and schools on behalf of its customers. Serco has been involved in a variety of controversies having a history of problems, failures, fatal errors and overcharging.