Clinical trials
Trials in the United Kingdom
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
29,034 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 86 |
| 2001 | 178 |
| 2002 | 199 |
| 2003 | 285 |
| 2004 | 374 |
| 2005 | 483 |
| 2006 | 600 |
| 2007 | 655 |
| 2008 | 755 |
| 2009 | 897 |
| 2010 | 983 |
| 2011 | 1,018 |
| 2012 | 1,106 |
| 2013 | 1,208 |
| 2014 | 1,409 |
| 2015 | 1,438 |
| 2016 | 1,486 |
| 2017 | 1,730 |
| 2018 | 1,716 |
| 2019 | 1,788 |
| 2020 | 1,515 |
| 2021 | 1,819 |
| 2022 | 1,621 |
| 2023 | 1,571 |
| 2024 | 1,469 |
| 2025 | 1,333 |
| 2026 | 905 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 17,513 |
| Unknown status | 3,166 |
| Recruiting | 2,857 |
| Terminated | 2,430 |
| Active, not recruiting | 1,926 |
| Withdrawn | 421 |
| Not yet recruiting | 404 |
| Enrolling by invitation | 200 |
| Suspended | 88 |
| No longer available | 14 |
| Approved for marketing | 12 |
| Available | 3 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| AstraZeneca | 792 |
| Imperial College London | 772 |
| GlaxoSmithKline | 679 |
| Novartis Pharmaceuticals | 611 |
| Hoffmann-La Roche | 561 |
| University of Oxford | 550 |
| University College, London | 546 |
| King's College London | 441 |
| University of Nottingham | 421 |
| Pfizer | 409 |
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 | 831 |
| Breast Neoplasms | 701 |
| Pulmonary Disease, Chronic Obstructive | 599 |
| Diabetes Mellitus, Type 2 | 559 |
| Carcinoma, Non-Small-Cell Lung | 527 |
| Asthma | 524 |
| Diabetes Mellitus | 460 |
| Obesity | 445 |
| Heart Failure | 440 |
| Prostatic Neoplasms | 434 |
Trials
Showing 1 to 25 of 29,034. Each trial links to its page on Pharma Observatory.
28,934 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
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