History
Since 1987, we have grown to manage several prisons, an immigration removal centre and two post-release approved premises. Originally known as UK Detention Services (UKDS), we won this work as the result of our nationally recognised standards of service, delivered by high calibre staff. Our reputation is also based on our business having a definite social purpose; everything we do is based on strong corporate values and beliefs.
Name change
UKDS was renamed Kalyx on 12 October 2006. This change reflects our growing success and aspirations for the future as the name UK Detention Services was felt too restrictive. We are optimistic about broadening our range of services beyond prisons as well as working outside of the UK.
Our new name
Kalyx is derived from the botanical term calyx, which is the whorl of leaves, or sepals, forming the protective covering of a flower bud. It is a symbolic representation of protection and care and it can also be associated with growth of the individual and strength - all attributes for which we are known and respected.
Sodexo and Kalyx
Kalyx is a wholly owned subsidiary of Sodexo a worldwide leader in quality of daily life solutions.
Quality of life plays an important role in the progress of individuals and the performance of organisations. Based on this conviction, Sodexo acts as the strategic partner for companies and institutions that place a premium on performance and employee well-being, as it has since Piérre Bellon founded the company in 1966.
Sharing the same passion for service, Sodexo's 380,000 employees in 80 countries design, manage and deliver an unrivalled array of on-site services solutions and motivational solutions. Sodexo has created a new form of service business that contributes to the fulfillment of its employees and the economic, social and environmental development of the communities, regions and countries in which it operates.
Sodexo’s areas of expertise are healthcare, education, leisure, remote sites, defence, seniors, corporate services and correctional services.
Sodexo provide a range of food and facilities management services through its correctional services group in France, Australia, Chile, Spain, Italy, Portugal and the Netherlands.
As Sodexo’s correctional subsidiary in the UK, Kalyx operates three prisons in England with a fourth in Scotland.
Kalyx receive expert assistance from the wider Sodexo group to ensure best of class delivery in many fields; including corporate control and procedures, audit, human resources, financial management, insurance, contract compliance and IT.

