Contact Us

We're here to provide help and assistance - call our friendly customer services team to discuss your DNA Relationship, Drug and Alcohol testing requirements. All enquiries are treated in the strictest of confidence. 


Phone: 0800 036 2522

Our office hours are:
8.00am to 6.00pm Monday - Friday

If you wish to contact us in relation to one of the job adverts on our careers page you can call us on the number above or email us at

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Our Customers

Find out more about how we can help you by clicking an image below:

Customer Information for Family Law Solicitors

Solicitors and Barristers
Cellmark is the company of choice for many of the UK's leading legal practitioners for court approved testing.

Customer Information for Social Workers and Local Authorities

Local Authorities
We provide local authority solicitors and social workers with the complete package of analytical testing services.

Customer Information for Private Individuals

Private Individuals
We’ve provided testing services for over 600,000 people - our customer services team will assist you every step of the way.

Customer Information for Healthcare Providers

Healthcare Professionals
Cellmark is the considered choice for healthcare professionals whose patients are looking into DNA testing.