The Home of DNA Testing

Cellmark pioneered the introduction of DNA analysis for paternity testing. We deliver a next day service using the most conclusive 24 marker genetic marker system - 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 450+ 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

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.

Our services

next day dna testing

Legal DNA Testing

MoJ Accredited laboratory

We provide a range of "Next Day" court approved DNA relationship tests including Paternity, Maternity, Sibling, Twins, Grandparentage, Avuncular plus those required for Immigration applications.


Hair Drug/Alcohol testing

Simple yet comprehensive

A clear pricing structure, a network of trained sample collectors and standard analysis turnaround times of 3-5 working days including interpretative statements all backed by advice and support on the end of the phone.



Convenient, conclusive and confidential

The Next Day, 24 marker, home sampling DNA testing service from Cellmark - with no hidden extras.

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Forensic Services

Forensic Services

Identification, interpretation, innovation

From presenting the first DNA evidence at the Old Bailey in 1987 to pushing the boundaries of sensitivity in numerous high profile forensic cases, our innovative analytical work has established our reputation for quality and technical excellence - from crime scene to court room.

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