WCS is a leading national provider of integrated water treatment and quality management services. It provides a broad range of water treatment, hygiene, testing and engineering services and is headquartered in Gloucestershire with around 500 employees. The company was founded in 1987 and has a long-standing base of customers across the UK in both the private and public sectors, including leisure, retail, defence and engineering, local authorities and NHS trusts.  



Founded in 2000, Guardian operates nationally from headquarters in Basildon, Essex, and employs around 130 staff. Guardian provides a comprehensive portfolio of water treatment, hygiene and pre-commissioning services to over 400 customers with a significant presence within the facilities management, engineering and manufacturing sectors.