Clinical trials
Trials in the United Kingdom with unknown status
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
3,166 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 13 |
| 2001 | 20 |
| 2002 | 20 |
| 2003 | 16 |
| 2004 | 29 |
| 2005 | 46 |
| 2006 | 49 |
| 2007 | 49 |
| 2008 | 65 |
| 2009 | 70 |
| 2010 | 80 |
| 2011 | 87 |
| 2012 | 100 |
| 2013 | 126 |
| 2014 | 136 |
| 2015 | 158 |
| 2016 | 166 |
| 2017 | 194 |
| 2018 | 209 |
| 2019 | 289 |
| 2020 | 264 |
| 2021 | 284 |
| 2022 | 237 |
| 2023 | 269 |
| 2024 | 115 |
| 2025 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Unknown status | 3,166 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| University College, London | 163 |
| Imperial College London | 131 |
| King's College London | 121 |
| Royal Marsden NHS Foundation Trust | 110 |
| University of Oxford | 99 |
| Guy's and St Thomas' NHS Foundation Trust | 85 |
| NHS Greater Glasgow and Clyde | 85 |
| University of Nottingham | 83 |
| King's College Hospital NHS Trust | 51 |
| Cambridge University Hospitals NHS Foundation Trust | 47 |
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 |
|---|---|
| Breast Neoplasms | 107 |
| Neoplasms | 96 |
| Heart Failure | 67 |
| Stroke | 64 |
| Obesity | 63 |
| COVID-19 | 62 |
| Colorectal Neoplasms | 61 |
| Pulmonary Disease, Chronic Obstructive | 57 |
| Prostatic Neoplasms | 56 |
| Cardiovascular Diseases | 50 |
Trials
Showing 26 to 50 of 3,166. Each trial links to its page on Pharma Observatory.
3,066 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.