How many employees work at Sellafield?
Sellafield Ltd. has approximately 4,143 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Sellafield’s total headcount has grown 12.2% from 3,693 employees in 2023 to 4,143 in 2026.
Is Sellafield hiring right now?
Yes, Sellafield is actively hiring. Sellafield had 15 active job postings in 2026, a 30.8% increase from 2025 — see job openings & hiring trends.
About Sellafield’s Workforce
Sellafield Ltd. is an Energy and Resources company that employs 4,143 people worldwide as of March 2026. It is the 11th-largest by headcount among its peers. Founded in 1971, the company is headquartered in Warrington, United Kingdom.
Sellafield's workforce has grown 12.2% from 2023 to 2026, though it is down 1.2% year over year in 2026. Its workforce is concentrated most in Northern Europe (99.5%), followed by Sub-Saharan Africa (0.1%) and Southern Europe (0.1%).
Sellafield's functional groups are Finance and Operations (40.9%), Sales and Marketing (32.1%), and Engineering (27.0%). The average salary is $72,995, ranging from a median of $67,000 in Northern Europe to $33,000 in Southern Europe, down 0.7% year over year in 2026.
Sellafield's active job postings rose 30.8% in 2026 to 15, with new postings per month cooling from 29 in 2023 to 17 in 2026. Overall employee sentiment is neutral but improving.
Sourced from Revelio Labs workforce data.
- Headquarters
- Warrington, United Kingdom
- Founded
- 1971
- Industry
- Energy and Resources
- Employees
- 4,143
- YoY
- -1.2% (-92)
As of March 2026
Sellafield workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Sellafield. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsSellafield Annual Employee Count (2023-2026)
- Sellafield had 4,143 employees in 2026, a 1.2% decline (-92) from 2025.
- Sellafield had 4,209 employees in 2025, a 0.9% decline (-61) from 2024.
- Sellafield had 4,270 employees in 2024, a 4.1% increase (+433) from 2023.
- Sellafield had 3,837 employees in 2023, a 2.6% increase (+72) from 2022.
Sellafield's total workforce has grown from 3,693 employees in 2023 to 4,143 in 2026.
Sellafield Ltd. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 4,143 | -92 | -1.2% |
| 2025 | Q4 | 4,209 | -61 | -0.9% |
| 2025 | Q3 | 4,242 | -13 | -0.5% |
| 2025 | Q2 | 4,227 | +231 | +2.6% |
| 2025 | Q1 | 4,235 | +349 | +3.7% |
| 2024 | Q4 | 4,270 | +433 | +4.1% |
| 2024 | Q3 | 4,255 | +457 | +3.8% |
| 2024 | Q2 | 3,996 | +303 | +2.9% |
| 2024 | Q1 | 3,886 | +170 | +2.5% |
| 2023 | Q4 | 3,837 | +72 | +2.6% |
| 2023 | Q3 | 3,798 | +10 | +2.9% |
| 2023 | Q2 | 3,693 | -6 | +2.7% |
See Sellafield's complete headcount history, including quarterly breakdowns.
Get the DataSellafield Employee Count by Region (2026)
Northern Europe accounts for the largest share of Sellafield's global workforce with approximately 100% of total employees, followed by Sub-Saharan Africa and Southern Europe.
Sellafield employees by region
| Region | Employees | % of Total |
|---|---|---|
| Northern Europe | 4,078 | 99.5% |
| Sub-Saharan Africa | 5 | 0.1% |
| Southern Europe | 5 | 0.1% |
| East Asia | 3 | 0.1% |
| Western Europe | 2 | 0.1% |
| North America | 2 | 0.0% |
| North Africa | 2 | 0.0% |
| Pacific Islands | 1 | 0.0% |
| South Asia | 1 | 0.0% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataSellafield Employee Count by Department (2026)
Sellafield's employee groups are Finance and Operations (40.9%), Sales and Marketing (32.1%), and Engineering (27.0%).
Sellafield employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 1,686 | 40.9% |
| Sales and Marketing | 1,326 | 32.1% |
| Engineering | 1,115 | 27.0% |
Compare Sellafield's department mix to industry peers.
See Full DataSellafield Employee Salary by Region (2026)
Sellafield's average employee salary is $72,995 globally. Employees in Northern Europe receive the highest compensation. Pay is lowest in Southern Europe, at a median of $33,000.
Sellafield median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| Sub-Saharan Africa | $67,000 |
| Northern Europe | $67,000 |
| Southern Europe | $33,000 |
Unlock salary by role, level, and city — and compare to Sellafield's industry peers.
Unlock Salary DataSellafield Job Openings and Hiring Trends (2023-2026)
- Sellafield had 15 active job postings in 2026, a 30.8% increase (-18) from 2025.
- Sellafield had 33 active job postings in 2025, a 37.0% decline (-15) from 2024.
- Sellafield had 48 active job postings in 2024, a 18.2% increase (+8) from 2023.
- Sellafield had 40 active job postings in 2023, a 120.0% increase from 2022.
- Hiring velocity in 2026: 17 new roles/month, up from 16 in 2025 and 24 in 2024.
Sellafield's active job postings rose 30.8% in 2026 to 15, with new postings per month cooling from 29 in 2023 to 17 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataSellafield Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Sellafield's workforce based on public professional data. Overall sentiment is neutral and has improved year over year in 2026.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
Unlock SentimentSimilar Companies
Similar Energy and Resources Companies by Employee Count
Frequently Asked Questions About Sellafield
- How fast is Sellafield growing?
- In 2026, Sellafield's headcount shrank 1.2% to 4,143 employees, down from 4,235 in 2025.
- See the full headcount history
- Where are Sellafield employees located?
- Most Sellafield employees are based in Northern Europe (99.5% of headcount), followed by Sub-Saharan Africa and Southern Europe.
- Explore where the workforce is based
- What is the average salary at Sellafield?
- The average employee salary at Sellafield is approximately $73k per year.
- Analyze the salary distribution
- How many new job postings does Sellafield open per year?
- In Q1 2026, Sellafield opened 52 new job postings. In 2025, Sellafield opened 195 new job postings — about 16 per month.
- Track hiring trends by role
- When was Sellafield founded and where is it headquartered?
- Sellafield was founded in 1971 and is headquartered in Warrington, United Kingdom.
- Compare Sellafield to industry peers
Speak with a workforce expert about Sellafield.
Book a DemoSee something that doesn't look right? Reach out and our team will review it.