Clinical trials
Completed trials in the United Kingdom
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
17,513 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 66 |
| 2001 | 141 |
| 2002 | 168 |
| 2003 | 247 |
| 2004 | 305 |
| 2005 | 373 |
| 2006 | 473 |
| 2007 | 506 |
| 2008 | 586 |
| 2009 | 714 |
| 2010 | 785 |
| 2011 | 812 |
| 2012 | 858 |
| 2013 | 906 |
| 2014 | 1,076 |
| 2015 | 1,059 |
| 2016 | 1,093 |
| 2017 | 1,226 |
| 2018 | 1,175 |
| 2019 | 1,029 |
| 2020 | 807 |
| 2021 | 949 |
| 2022 | 758 |
| 2023 | 567 |
| 2024 | 378 |
| 2025 | 175 |
| 2026 | 32 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 17,513 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| AstraZeneca | 534 |
| GlaxoSmithKline | 521 |
| Novartis Pharmaceuticals | 413 |
| Imperial College London | 408 |
| Hoffmann-La Roche | 386 |
| University of Oxford | 317 |
| Pfizer | 267 |
| University of Edinburgh | 256 |
| University of Nottingham | 252 |
| University College, London | 226 |
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 |
|---|---|
| Neoplasms | 430 |
| Pulmonary Disease, Chronic Obstructive | 428 |
| Diabetes Mellitus, Type 2 | 418 |
| Asthma | 388 |
| Breast Neoplasms | 368 |
| Diabetes Mellitus | 330 |
| Obesity | 252 |
| Carcinoma, Non-Small-Cell Lung | 221 |
| Heart Failure | 221 |
| Stroke | 218 |
Trials
Showing 1 to 25 of 17,513. Each trial links to its page on Pharma Observatory.
17,413 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.
Go deeper on Pharma Observatory
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.