How many employees work at Costello Medical?

Costello Medical Consulting Ltd. has 611 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is 9.1%.

Data source: Revelio Labs Coverage: Global workforce Latest update: December 2025

About Costello Medical

At Costello Medical, we enjoy building lasting partnerships in the healthcare sector by providing exceptional service. Our vision is to be a leading global partner consistently striving for meaningful and outstanding contributions that improve people’s health and lives. Our experts support the healthcare sector in the analysis, interpretation, and communication of clinical and health economic data; our service offerings include evidence development, statistics, health economics, HTA, real-world evidence, market access, medical affairs, publications, and design. We are one of the most established independent agencies delivering medical communications and health economic services. We have grown organically since foundation in 2008 to a team of over 350 based in Cambridge, London, Manchester and Bristol in the UK and internationally in Singapore, China and the US. Our talented team has experience with a variety of leading pharmaceutical and device companies across an extensive range of therapy areas and geographies, including Europe, Asia Pacific, and North America. We are proud to have achieved a 3-star accreditation with Best Companies™ for a sixth consecutive year, and have achieved B Corp certification, showing that we meet the highest standards of verified social and environmental performance.

As of December 2025

Costello Medical
workforce metrics

Headcount

611

Avg. Salary

$61.9k

Tenure

2.2yr

Growth Rate

9.1%

Hiring Rate

Attrition Rate

For even more metrics data,
reach out to our sales team.

Contact Sales

Employee Headcount

Interactive chart of Costello Medical annual worldwide employee count from 2023 to 2025.

  • Costello Medical total number of employees in 2025 was 567, a 9.1% increase from 2024.
  • Costello Medical total number of employees in 2024 was 517, a 17.4% increase from 2023.
  • Costello Medical total number of employees in 2023 was 434, a 1.2% increase from 2022.

Would you like to see the latest employee headcount data?

Contact Sales

Employee Geographic Breakdown

Would you like to see the latest employee geographic data?

Contact Sales

Employee Role Breakdown

Would you like to see the latest employee role breakdown data?

Contact Sales

Employee Compensation

Would you like to see the latest employee compensation data?

Contact Sales

Active Job Postings

Interactive chart of Costello Medical annual active job postings from 2023 to 2025.

  • Costello Medical active job postings in 2025 was 68, a 66.7% increase from 2024.
  • Costello Medical active job postings in 2024 was 34, a 32.1% decline from 2023.
  • Costello Medical active job postings in 2023 was 47, a 4.3% increase from 2022.

Would you like to see the latest active job postings data?

Contact Sales

Employee Sentiment

Sentiment Topics

Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales
Contact Sales

Would you like to see the latest employee sentiment data?

Contact Sales