We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.
We also use cookies set by other sites to help us deliver content from their services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
How to apply for a clinical trial including eligibility, phases, model IMPDs, costs and how to make changes to your application.
How to apply for a clinical trial from 28 April 2026, including eligibility, documentation and registration in a public registry.
How to show the MHRA you're meeting good clinical practice (GCP) standards and what to expect from an inspection.
Guidance on the various types of modifications that can be made to a clinical trial approval.
How to notify the MHRA of your intention to carry out a clinical investigation for medical devices.
Change your protocol, update your authorisation, report safety issues, submit safety updates and complete your end-of-trial study report.
Guidance on clinical trials that are categorised as ‘notifiable’.
Information about when you need to submit substantial amendments to a clinical trial including changes to the trial sponsor or legal representative, Investigational medicinal product certification and importation.
Clinical trial applications that need expert advice from a specialist group or committee.
Past and current clinical trials into therapeutic and antiviral treatments for COVID-19, how to take part, and which treatments have proven to be effective.
Don’t include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we’d like to know more about your visit today. Please fill in this survey (opens in a new tab and requires JavaScript).