Clinical trials
Trials in the United Kingdom
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
29,052 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 | 1,820 |
| 2022 | 1,621 |
| 2023 | 1,573 |
| 2024 | 1,470 |
| 2025 | 1,335 |
| 2026 | 917 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 17,520 |
| Unknown status | 3,165 |
| Recruiting | 2,865 |
| Terminated | 2,434 |
| Active, not recruiting | 1,924 |
| Withdrawn | 421 |
| Not yet recruiting | 405 |
| Enrolling by invitation | 201 |
| 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 | 612 |
| Hoffmann-La Roche | 563 |
| University of Oxford | 550 |
| University College, London | 546 |
| King's College London | 441 |
| University of Nottingham | 421 |
| Pfizer | 410 |
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 | 832 |
| Breast Neoplasms | 703 |
| Pulmonary Disease, Chronic Obstructive | 600 |
| Diabetes Mellitus, Type 2 | 559 |
| Carcinoma, Non-Small-Cell Lung | 527 |
| Asthma | 524 |
| Diabetes Mellitus | 460 |
| Obesity | 446 |
| Heart Failure | 441 |
| Prostatic Neoplasms | 434 |
Trials
Showing 51 to 75 of 29,052. Each trial links to its page on Pharma Observatory.
28,952 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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