Aviation: Serco provides air traffic control services at international airports in the United Arab Emirates and at some smaller airports in the USA and Canada. Since 2004 Serco have also had £5m a year from the US government to manage airports in Iraq. Serco also operate Scatsta Airport on Shetland. In June 2010 Serco signed a £4million contract to operate all air traffic control services for Coventry Airport.
Health in the USA: In July 2013 Serco was awarded a $1.25 billion contract to manage Obamacare.
Education: Serco holds a 10-year contract with Bradford City Council to manage and operate the local education authority, providing education support services to the City's schools, and similarly manages and operates Walsall and Stoke-on-Trent local education authorities. Serco is one of Ofsted's three Regional Inspection Service Providers, responsible for school inspections in the English Midlands. Serco is also the provider of a Student information system, Facility, used in schools and colleges in several countries.
Drivers' licensing: Serco, through a purpose-made division Serco DES, holds a 10-year, $114 million contract with the Province of Ontario to operate the province's DriveTest driver examination centres. These tests include vision, road, and knowledge tests for all persons seeking to become a licensed automobile driver in the province.
Serco publishes a magazine, Ethos Journal, to stimulate thought and provoke reaction to the big issues shaping the world of public services. Ethos is aimed at public sector leaders, politicians, academics and policy specialists debating the future of public services today.
Serco operates waste collection services for local councils.
Serco operates in Continental Europe, the Middle East, the Asia Pacific region and North America, but the majority of its turnover still comes from the UK.
The Union of Christmas Island Workers highlighted the systemic failure by Serco to manage the Christmas Island Detention Centre. The centre detains a large number of refugees including 1,000 children. Under Serco, there has been an increase of deaths in custody, self-harm, and of Serco staff beating prisoners. As well, there has been a deterioration of facilities leading to the decline of the physical and the mental health of detainees and of staff. Ombudsman Allan Asher on the Australian radio show AM said, "In the first week of June when I visited Christmas Island, more than 30 incidents of self-harm by detainees held there were reported." Serco, in a staged memo leaked to The Australian, blamed the detainees for "creating a culture of self-harm," in order to use it as a "bargaining tool." The former manager of the Serco run detention centre stated the centre was grossly understaffed whereby it was "typically 15 staff members short every day."
In health services, Serco's difficulties include the poor handling of pathology labs and fatal errors in patient records. At St Thomas' Hospital, the increase in the number of clinical incidents arising from Serco non-clinical management has resulted in patients receiving incorrect and infected blood, as well as patients suffering kidney damage due to Serco providing incorrect data used for medical calculations. A Serco employee later revealed that the company had falsified 252 reports to the National Health Service regarding Serco health services in Cornwall.
In September 2013, Ireland rejected a tender by Serco when the company was found to be involved in a £56 million pound fraud in Britain.
In September 2013, Serco was accused of extensive sexual abuse cover-ups of immigrants at Yarls Wood prison in Bedfordshire, England 
It emerged in November 2013, Serco, which won a contract for Suffolk Community Healthcare in 2012, had 72 vacancies after earlier cutting 137 posts. Problems identified by Ipswich and East Suffolk Clinical Commissioning Group include “staff capacity, skill mix, workload, succession planning and morale, training, communication, mobile working, care co-ordination centre processes, incidents and near miss incidents”.
Serco Ltd v Lawson  UKHL 3, a UK labour law case concerning the jurisdictional application of employment rights.