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
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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.
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Employee Geographic Breakdown
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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.
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Employee Sentiment
Sentiment Topics
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