Clinical trials
Phase 4 trials in the United Kingdom
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
1,212 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 5 |
| 2001 | 12 |
| 2002 | 15 |
| 2003 | 38 |
| 2004 | 43 |
| 2005 | 45 |
| 2006 | 65 |
| 2007 | 55 |
| 2008 | 73 |
| 2009 | 80 |
| 2010 | 63 |
| 2011 | 74 |
| 2012 | 69 |
| 2013 | 71 |
| 2014 | 73 |
| 2015 | 60 |
| 2016 | 64 |
| 2017 | 43 |
| 2018 | 39 |
| 2019 | 44 |
| 2020 | 26 |
| 2021 | 32 |
| 2022 | 26 |
| 2023 | 17 |
| 2024 | 25 |
| 2025 | 19 |
| 2026 | 13 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 868 |
| Terminated | 111 |
| Unknown status | 105 |
| Recruiting | 48 |
| Withdrawn | 39 |
| Active, not recruiting | 31 |
| Not yet recruiting | 7 |
| Enrolling by invitation | 2 |
| Suspended | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Imperial College London | 41 |
| University of Dundee | 41 |
| Pfizer | 36 |
| University of Oxford | 34 |
| GlaxoSmithKline | 32 |
| Hoffmann-La Roche | 31 |
| Novartis Pharmaceuticals | 31 |
| AstraZeneca | 26 |
| Sanofi | 25 |
| University of Nottingham | 24 |
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 | 58 |
| Pulmonary Disease, Chronic Obstructive | 49 |
| Asthma | 48 |
| Diabetes Mellitus | 40 |
| Arthritis, Rheumatoid | 37 |
| Atrial Fibrillation | 26 |
| HIV Infections | 23 |
| Coronary Artery Disease | 21 |
| Hypertension | 19 |
| Diabetes Mellitus, Type 1 | 18 |
Trials
Showing 26 to 50 of 1,212. Each trial links to its page on Pharma Observatory.
1,112 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.