Clinical trials
Completed Phase 4 trials in the United Kingdom
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
868 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 1 |
| 2001 | 9 |
| 2002 | 15 |
| 2003 | 32 |
| 2004 | 35 |
| 2005 | 37 |
| 2006 | 49 |
| 2007 | 38 |
| 2008 | 49 |
| 2009 | 60 |
| 2010 | 51 |
| 2011 | 63 |
| 2012 | 50 |
| 2013 | 59 |
| 2014 | 62 |
| 2015 | 48 |
| 2016 | 49 |
| 2017 | 31 |
| 2018 | 31 |
| 2019 | 25 |
| 2020 | 14 |
| 2021 | 18 |
| 2022 | 14 |
| 2023 | 5 |
| 2024 | 4 |
| 2025 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 868 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| University of Dundee | 36 |
| GlaxoSmithKline | 29 |
| Pfizer | 29 |
| Novartis Pharmaceuticals | 26 |
| University of Oxford | 25 |
| Hoffmann-La Roche | 24 |
| Imperial College London | 24 |
| AstraZeneca | 22 |
| Sanofi | 22 |
| Boehringer Ingelheim | 19 |
Top conditions
MeSH conditions the trials were registered with, not their broader categories. A condition with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Diabetes Mellitus, Type 2 | 45 |
| Asthma | 40 |
| Pulmonary Disease, Chronic Obstructive | 40 |
| Diabetes Mellitus | 30 |
| Arthritis, Rheumatoid | 22 |
| HIV Infections | 17 |
| Atrial Fibrillation | 16 |
| Coronary Artery Disease | 13 |
| Influenza, Human | 13 |
| Multiple Sclerosis | 13 |
Trials
Showing 1 to 25 of 868. Each trial links to its page on Pharma Observatory.
768 more trials match. See them on Pharma Observatory
Recently changed trials
Changes observed in the last 7 days, newest first, site-count changes left out. Source: ClinicalTrials.gov.
No changes to these trials in the last 7 days.
Go deeper on Pharma Observatory
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.