How many employees work at Mimecast UK?
Mimecast UK Ltd. has 3,020 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is -8.4%.
Data source: Revelio Labs Coverage: Global workforce Latest update: December 2025
About Mimecast UK
Mimecast: Work Protected Since 2003, Mimecast has stopped bad things from happening to good organizations by enabling them to work protected. We empower more than 40,000 customers to help mitigate risk and manage complexities across a threat landscape driven by malicious cyberattacks, human error, and technology fallibility. Our advanced solutions provide the proactive threat detection, brand protection, awareness training, and data retention capabilities that evolving workplaces need today. Mimecast solutions are designed to transform email and collaboration security into the eyes and ears of organizations worldwide. For help, please email support@mimecast.com.
As of December 2025
Mimecast UK
workforce metrics
Headcount
3k
Avg. Salary
$116k
Tenure
3.1yr
Growth Rate
-8.4%
Hiring Rate
Attrition Rate
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Employee Headcount
Interactive chart of Mimecast UK annual worldwide employee count from 2023 to 2025.
- Mimecast UK total number of employees in 2025 was 3,019, a 8.4% decline from 2024.
- Mimecast UK total number of employees in 2024 was 3,284, a 1.8% decline from 2023.
- Mimecast UK total number of employees in 2023 was 3,342, a 0.4% decline from 2022.
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Employee Geographic Breakdown
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Active Job Postings
Interactive chart of Mimecast UK annual active job postings from 2023 to 2025.
- Mimecast UK active job postings in 2025 was 143, a 52.0% increase from 2024.
- Mimecast UK active job postings in 2024 was 84, a 48.0% decline from 2023.
- Mimecast UK active job postings in 2023 was 137, a 49.0% decline from 2022.
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Employee Sentiment
Sentiment Topics
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