Interserve Plc provides advice, design, construction, equipment, facilities management, and citizen services in the United Kingdom and internationally. Its Support Services segment offers support services to public- and private-sector clients. The company's Construction segment designs, constructs, and maintains buildings and infrastructure. Its Equipment Services segment designs, hires, and sells formwork, falsework, and related access equipment. The company also engages in the property management, development, rental, and leasing activities; management of five community rehabilitation companies; pension trustee activities; fitting out and refurbishment of offices and other buildings; equipment hire and sales activities; rental of plant and machinery; and provision of transport and maintenance services to the oil and gas industry. In addition, it offers healthcare, vocational training, welfare-to-work, employment, probation and rehabilitation, contract and window cleaning, catering, defense sector and industrial support, asbestos, supply, security manpower and support, manned guarding security, mechanical and electrical engineering, army training estate, personnel and management, fire suppression and detection system, insurance, education, and building maintenance services. Further, the company provides oil-field maintenance, fabrication, and construction services; support services for integration of disabled people into cleaning contracts and the transport sector; operational and financial services to PFI/PPP projects; management/maintenance services for slough borough council; management/maintenance services for MoD; and solutions for building/infrastructure projects. Additionally, it offers mechanical, electrical, and engineering services; and acts as a trustee. The company was formerly known as Tilbury Douglas Plc and changed its name to Interserve Plc in February 2001. Interserve Plc was founded in 1884 and is headquartered in Twyford, the United Kingdom.