How many employees work at National Nuclear Lab?
United Kingdom National Nuclear Laboratory Ltd. has 1,003 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is -2.6%.
Data source: Revelio Labs Coverage: Global workforce Latest update: December 2025
About National Nuclear Lab
As the UK’s national laboratory for nuclear fission, NNL is harnessing nuclear science to help solve some of the world’s biggest challenges. Our purpose is ‘nuclear science to benefit society’ and we channel our work into four Focus Areas: Clean Energy, Health and Nuclear Medicine, Environmental Restoration and Security and Non-Proliferation. These strategic areas are the cornerstones of our ambition, shaping what we deliver to our customers and for UK society, and how we invest in our future. We are custodians of a unique set of facilities and capabilities that enable ground-breaking nuclear research and development, comprising four world-leading laboratories in North West England, a base in Wales and research sites at Risley in Cheshire, Stonehouse in Gloucestershire and Culham in Oxfordshire. We have a reputation as a home for stimulating, rewarding careers and are building a culture where everybody feels valued and can flourish. If you are looking for a role that enables you to put your skills and talents towards delivering sustainable solutions to the major challenges of the 21st century, visit: www.nnl.co.uk/careers/current-vacancies.
As of December 2025
National Nuclear Lab
workforce metrics
Headcount
1k
Avg. Salary
$73.6k
Tenure
4.8yr
Growth Rate
-2.6%
Hiring Rate
Attrition Rate
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Employee Headcount
Interactive chart of National Nuclear Lab annual worldwide employee count from 2023 to 2025.
- National Nuclear Lab total number of employees in 2025 was 1,002, a 2.6% decline from 2024.
- National Nuclear Lab total number of employees in 2024 was 1,029, a 5.0% increase from 2023.
- National Nuclear Lab total number of employees in 2023 was 979, a 0.8% increase from 2022.
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Employee Geographic Breakdown
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Active Job Postings
Interactive chart of National Nuclear Lab annual active job postings from 2023 to 2025.
- National Nuclear Lab active job postings in 2025 was 13, a 76.2% decline from 2024.
- National Nuclear Lab active job postings in 2024 was 29, a 98.2% decline from 2023.
- National Nuclear Lab active job postings in 2023 was 85, a 53.7% increase from 2022.
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Employee Sentiment
Sentiment Topics
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