About Cellmark

Cellmark pioneered the introduction of DNA analysis for paternity testing. We deliver a next day service using the most conclusive 24 marker genetic test - across our range of DNA relationship testing services - that includes DNA testing for - Maternity, Sibling, Avuncular, Grandparentage and Immigration matters as well. If your samples reach us by 10am we can get the test report to you by the end of the next working day!


Established in 1987, Cellmark is the UK’s most experienced DNA testing service and the world’s first private DNA fingerprinting company. As one of the largest forensic and DNA testing companies in the world, Cellmark has a reputation for quality, reliability and service excellence.


We have a rich history of innovation and a collective drive to be the best at what we do. Our 500+ staff members are at the heart of our business, working from our headquarters in Abingdon, Oxfordshire as well from our facilities in Chorley, Lancashire and in Durham.

UK Accredited labs

Cellmark is a UKAS accredited testing laboratory No. 2045. Our state-of-the-art laboratory in Abingdon, Oxfordshire is accredited to ISO17025 and certified to ISO9001, ISO14001 and ISO27001 international quality standards. This means you can be sure your test will be carried out reliably, with care, accuracy and precision.

Other Services Link - DNA at Home DNA Testing

Home DNA Testing
The quality you would expect from the UK's most experienced paternity tester with the convenience of sampling in your own home.

Other Services Link - Cellmark Forensic Services

Forensic Services
Cellmark provides high quality, specialist forensic science services to support the investigation of a wide range of offences.

Other Services Link - DNA Protected and the Forensic Dog DNA Database

DNA Protected
DNA protected has been developed to deter thieves, provide dog owners with peace of mind and to help collar the criminals.

Other Services Link - Great Crested Newt eDNA Testing Services

eDNA Testing
Cellmark's eDNA testing services provides a rapid and effective way to test for the presence or absence of great crested newts.