The CLINICAL TRIAL Company Group™ (TCTC Group™) is a privately owned, full-service global Clinical Contract Research Organization providing professional support to pharmaceutical, biotechnology, medical device and academic businesses and institutions. The company was incorporated in 2002 as The CLINICAL TRIAL Company™. TCTC Group™ has 7 different divisions each one addressing a different need and offering stand-alone services or full-service trial programmes, which optimise the integration of the client’s expertise with our own.


Our company's professional approach provides cutting edge solutions in order to move clinical trials forward and provide exceptional services to our clients. Our philosophy is one of teamwork, positivity, communication, responsibility and adding value. We conduct clinical trials of all sizes in all therapeutic areas with a particular expertise in advanced therapies, such as cell and gene therapies, as well as Orphan drugs, CNS, and medical devices. TCTC successfully executed clinical trials for the first Gene therapy to be approved in Europe. This approval trailblazes the way for other gene therapies in development and strengthens TCTC’s reputation as a leader in the field of Advanced Therapy Clinical Trials.


Our senior-level personnel, with many years' experience in the pharmaceutical industry, can provide all the essential insights required for a successful clinical trial or trial programme, completing your trial(s) on time and within budget and working closely with you in getting your product to a trade sale or market.


TCTC has been inspected by the UK MHRA and has a current certificate of compliance. There were no critical or major findings observed during the inspection.


The Company operates an ISO 9001:2015 Quality Management System and received the Queen’s Award for Enterprise in 2012.



Years of


More than



Over 400


The Clinical Trial Company
The Clinical Trial Company


"I first used TCTC to bail out a study we had placed with a well known global CRO which had been unable to deliver to the agreed timelines and budget.  We went on to use them for all our development programmes worldwide.  They have always been responsive, efficient and prepared “to go the extra mile”.

Director of Clinical and Regulatory Affairs, start up Biotech.

“I have worked very successfully with The CLINICAL TRIAL Company on many projects to date and would not hesitate in using TCTC again for future projects or indeed recommending them to other companies. The TCTC team is very positive to work with and always available for queries. Also good very at providing solutions in difficult situations. A very accommodating CRO and flexible regarding delays and changes to timelines.”

“I was first introduced to TCTC at my previous company; I am happy to report they have provided for our group in my current company and have met and exceeded my expectations.  TCTC are always friendly and efficient and I would be very happy to recommend their services to other companies.”

Senior Clinical Research Coordinator, International pharmaceutical company

Project Manager, Biotech, UK

”We selected this CRO in 2007 as the CRO to run a phase III clinical trial in Huntington's disease. One of the main reasons for selecting this CRO was their in-depth therapeutic knowledge in the field and that they, despite their relatively small size, were prepared to take on the full study management with a well-defined, tried-and-tested network of subcontractors. 

This CRO's attention to the study has been outstanding and has exceeded our expectations. In particular we have appreciated their pro-active approach, low turn-over in the study team, good communication and excellent overview over the study processes, which together has allowed timely solutions for upcoming issues all the way from feasibility to report writing”.

Vice President
Head of Clinical Development

"We have contracted with TCTC for medical writing services for a clinical investigation of a medical device. We have been impressed with the level of professionalism, expertise, and quality of work produced by the TCTC contractors."

Clinical Project Manager, Biotech, UK

”The work that this CRO has brought to our team has been interesting and challenging and allowed us to contribute to current clinical research in Huntington’s Disease, an area of real unmet medical need.

It is a pleasure to work with the CRAs who are well informed about the study, highly supportive and very professional in all their dealings with us at site”.

Consultant in Neuropsychiatry
Hon. Reader in Neuropsychiatry, UK

"Excellent, professional team bringing invaluable experience to support our medical device development and regulatory approval."

CEO, Medical Device Company

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