In 1992, Wolds Prison in Yorkshire became the first modern European prison to be run by the private sector. G4S, the company who ran Wolds Prison, has now been stripped of this contract but the number of our prisons in the private sector has grown to 14. 

The 14 privately managed prisons in England and Wales are shared between just three companies. Five are in the hands of G4S, four are operated by Sodexo, and the other five are under the control of outsourcing company Serco. 

Read more about the privatisation of prisons and what we can do about it here.


Serco is a multinational outsourcing company that provides outsourced public services and security services. In the UK, Serco operates in a number sectors of public service provision:

  • Health services, including NHS and GP services
  • Transport, including train services on Merseyside and the north of England, in partnership with Abellio
  • Prisons and justice, where it was banned from further government contracts after overcharging on electronic tagging contracts
  • Immigration and border control, including the infamous Yarl's Wood detention centre
  • Defence, mainly maintenance contracts.​
  • Shared and back-office services for local councils

Serco is a UK-based plc that is listed on the London Stock Exchange.


​Sodexo Justice Services is a subsidiary of Sodexo, a French multinational food, facilities and justice services multinational based in Paris.

In the U.K. Sodexo Justice Services provides a range of custodial and post-release services to the UK Ministry of Justice, particularly design, construction, management and financing of contracts for PFI prisons. It directly operates 5 UK prisons.

Sodexo also runs 6 of the 21 regional Community Rehabilitation Companies set up the Government following the privatisation of probation services in 2015.

G4S plc is a British multinational security services company headquartered in Crawley.
The company runs 5 prisons in the UK, and ran the UK's first privatised prison, Wolds, in Yorkshire. They take contracts from the government for childrens detention centres, tagging of offenders, and were in charge of security for the Olympics, for which they famously failed to provide enough staff, and had to be backed up by the Army.
G4S have been repeatedly bailed out in this manner after failing to provide the service they were contracted for. They have also had contracts taken away from them multiple times, for the same reason.

Amey is a subsidiary of the Spanish construction, infrastructure and urban services group Grupo Ferrovial, which is publicly traded on the stock exchange.

Amey works for local and central government delivering services such as highways and rail management and maintenance, facilities management, waste collection and treatment and other utilities services. 

It has recently been thrust into the spotlight because of its role in tearing down trees in Sheffield, despite a strong protest campaign by locals.


Carillion plc is a British multinational facilities management and construction services company headquartered in Wolverhampton, United Kingdom. It is listed on the London Stock Exchange.

Carillion dramatically collapsed in January 2018 following multiple warnings about its financial situation.  It had public sector contracts in construction, tagging prisoners, building hospitals and schools, and providing school lunches.

It has dozens of subsidiary companies, a few of which are involved in NHS service provision. The most notorious is Clinicenta, who ran a hospital in Stevenage, and had their license revoked by the Care Quality Commission in 2013 after failing to provide a safe level of care to patients.

Have you seen a story of privatisation failing? Email us the link at and we'll add it to the list!