Julia van Wijnkoop

Part of Educational Testing Service, PSI International Holdings Ltd. is a holding company that operates as a subsidiary providing stakes testing services. The company is based in Guildford, UK. PSI International Holdings was founded in 2016.

PSI Services (UK) Ltd. is based in Guildford, UK. Part of Educational Testing Service, PSI Services (UK) Ltd. is a British company that provides information technology services. PSI Services (UK was founded in 1995.

EnlightKS Ltd. provides eLearning, eAssessment, and performance support services. It offers KStutor, a simulation and eLearning content platform; ET2, an adaptive eLearning and eAssessment platform in the cloud; and KShelper that provides context sensitive, guidance, and simulation eLearning solutions. The company was founded in 1995 and is headquartered in Royston, the United Kingdom.

PSI Services LLC provides professional testing services to corporations and federal and state government agencies. The firm offers a comprehensive solutions approach from test development to delivery to results processing, including pre-hire employment selection, managerial assessments, licensing and certification tests, and license management services. The company was founded in 1946 and is headquartered in Glendale, CA.