Paid clinical trials in London typically pay between £100 and £3,000+ per study, with several established research units recruiting healthy volunteers across the capital. The main London options include Parexel in Uxbridge, HMR (London Trials) in North West London, and Trials4Us in Central London. This guide compares them, explains what you can earn, and shows how to apply safely.
Who is this guide for?
If you live in or near London and want to earn money by taking part in regulated medical research, this guide is for you. It covers the main paid trial units in the capital, typical pay, and how to make sure any study is genuine before you apply.
Where can you find paid clinical trials in London?
London has one of the highest concentrations of clinical research units in the UK. The main providers recruiting healthy volunteers across the capital are:
| Provider | Area | Known for | Typical pay |
|---|---|---|---|
| Parexel | Uxbridge, Greater London | Global CRO, patient care | £100–£3,000+ |
| HMR (London Trials) | North West London | Speed, safety, early-stage work | £100–£3,000+ |
| Trials4Us | Central London | Comfort, professionalism | £100–£3,000 |
Each has a dedicated review: see our guides to Parexel, HMR (London Trials) and Trials4Us for pay, safety and what to expect at each unit.
How much do London clinical trials pay?
Pay depends on the study, not just the location. As a general benchmark for London:
- Outpatient visits: £50–£200 per visit
- Short residential studies: £1,000–£3,000
- Longer or complex early-phase trials: £3,000+
Higher payments usually reflect longer residential stays and more complex protocols. For a full breakdown across the UK, see our guide to the best-paid clinical trials.
How do you apply for a paid trial in London?
- Choose a unit and check its current studies. Each London provider lists open studies on its own site.
- Complete the eligibility screening. You’ll answer questions about your age, health and medical history.
- Confirm the study is registered. Use the UK’s Be Part of Research service or the WHO registry.
- Read the participant information sheet for pay, time commitment and your right to withdraw.
Are London clinical trials safe?
All London trials operate under the same UK safeguards: every study must be authorised by the Medicines and Healthcare products Regulatory Agency (MHRA) and approved by an independent research ethics committee, as the NHS explains. You can withdraw at any time, without giving a reason. Our guide to clinical trial safety and compensation covers the protections in detail.
How to spot a clinical trial scam
A genuine London trial will never ask you to pay to take part, and never asks for banking logins or a fee up front. Legitimate units ask detailed medical-history questions during screening. If a “trial” asks for money or seems vague about who is running the study and where, treat it as a red flag.
The bottom line
London offers some of the widest choice of paid clinical trials in the UK, with units in Uxbridge, North West London and Central London. Compare providers, confirm any study is registered and MHRA-approved, never pay to join, and read the information sheet before you consent.
Frequently Asked Questions
How much do paid clinical trials in London pay?
Most London studies pay between £100 and £3,000+, depending on the length of the study and the number of overnight stays.
Which companies run paid trials in London?
The main London units include Parexel (Uxbridge), HMR / London Trials (North West London) and Trials4Us (Central London).
Are paid clinical trials in London safe?
Yes. All London trials are authorised by the MHRA and approved by an independent ethics committee, with on-site medical supervision. You can withdraw at any time.
Can students take part in London clinical trials?
Yes. Many healthy-volunteer studies suit students, who often value the flexible scheduling and decent pay. Check the eligibility criteria for each study.
How do I find paid clinical trials near me in London?
Compare current London studies through CheckMyTrial, or apply directly to a unit such as Parexel, HMR or Trials4Us.
Find paid clinical trials in London
CheckMyTrial helps you compare paid clinical trials across London and the rest of the UK by location, pay and study type. Browse current paid trials or read how clinical trials work before you apply.