Cellmark was the first private paternity testing company in the UK and participated in the consultation process which led to the establishment of the Department of Health's voluntary code of practice on genetic paternity testing in England, Wales and Northern Ireland.
In December 2011, Laboratory Corporation of America Holdings (LabCorp) completed the acquisition of Orchid Cellmark Inc.
In 2015 the company acquired Keith Borer Consultants, based in Durham, who provide forensic defence services through its wholly owned subsidiary, OCM Acquisition Corp.[7] It is now, in the United States, called Cellmark Forensics, Inc.
The company is now one of the major providers of forensic services to police forces in England and Wales and has laboratories in Abingdon-on-Thames, Oxfordshire, and Chorley, Lancashire.
[1] In February 2007, the company's location in Abingdon-on-Thames, Oxfordshire was targeted as part of the Miles Cooper letter bomb campaign.