UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED
UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED has submitted data every year since 2017. 1 of 9 submissions were filed after the deadline.
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Last submission received on Wednesday, 1 Apr 2026 at 10:21 UTC.
Overall workforce composition
Deviation from a 50:50 gender split, averaged across all four pay quartiles per year. 0% represents an equal split of men and women; positive values mean more women, negative means fewer women.
Hourly pay gap over time
Positive values indicate women's hourly pay is lower than men's by that percentage. A value of 0 indicates equal pay; negative values indicate women earn more.
Pay quartile breakdown
Each band shows the percentage of that quartile that is male vs female.
Lower quartile bottom 25% of earners
Lower-middle quartile 25–50th percentile
Upper-middle quartile 50–75th percentile
Top quartile top 25% of earners
Bonus pay
Percentage of each gender who received a bonus payment.
Bonus pay gap — positive values indicate women's bonus pay is lower than men's.
Year by year
Each year's submission in full. Most recent year shown first.
2025 Mean pay gap 8.5%
Submitted on Wednesday, 1 Apr 2026 at 10:21 UTC.
In this organisation, women earned 92p for every £1 that men earned when comparing median hourly pay.
Women made up 26.0% of the highest paid quarter and 41.5% of the lowest paid quarter.
Pay quartile breakdown
2024 Mean pay gap 9.8% Late submission
Submitted on Thursday, 24 Apr 2025 at 08:40 UTC.
In this organisation, women earned 88p for every £1 that men earned when comparing median hourly pay.
Women made up 24.9% of the highest paid quarter and 40.5% of the lowest paid quarter.
Pay quartile breakdown
2023 Mean pay gap 9.7%
Submitted on Tuesday, 26 Mar 2024 at 16:42 UTC.
In this organisation, women earned 92p for every £1 that men earned when comparing median hourly pay.
Women made up 24.0% of the highest paid quarter and 39.0% of the lowest paid quarter.
Pay quartile breakdown
2022 Mean pay gap 10.1%
Submitted on Tuesday, 21 Mar 2023 at 13:21 UTC.
In this organisation, women earned 84p for every £1 that men earned when comparing median hourly pay.
Women made up 22.7% of the highest paid quarter and 41.0% of the lowest paid quarter.
Pay quartile breakdown
2021 Mean pay gap 11.2%
Submitted on Thursday, 17 Mar 2022 at 15:18 UTC.
In this organisation, women earned 86p for every £1 that men earned when comparing median hourly pay.
Women made up 21.3% of the highest paid quarter and 39.9% of the lowest paid quarter.
Pay quartile breakdown
2020 Mean pay gap 10.9%
Submitted on Monday, 22 Mar 2021 at 14:00 UTC.
In this organisation, women earned 83p for every £1 that men earned when comparing median hourly pay.
Women's median bonus pay was 9.6% higher than men's.
Women made up 21.0% of the highest paid quarter and 38.0% of the lowest paid quarter.
Pay quartile breakdown
2019 Mean pay gap 9.1%
Submitted on Tuesday, 31 Mar 2020 at 12:56 UTC.
In this organisation, women earned 83p for every £1 that men earned when comparing median hourly pay.
Women made up 21.0% of the highest paid quarter and 36.0% of the lowest paid quarter.
Pay quartile breakdown
2018 Mean pay gap 11.0%
Submitted on Thursday, 4 Apr 2019 at 14:22 UTC.
In this organisation, women earned 83p for every £1 that men earned when comparing median hourly pay.
Women made up 23.0% of the highest paid quarter and 36.0% of the lowest paid quarter.
Pay quartile breakdown
2017 Mean pay gap 9.2%
Submitted on Sunday, 18 Mar 2018 at 11:59 UTC.
In this organisation, women earned 82p for every £1 that men earned when comparing median hourly pay.
Women made up 20.0% of the highest paid quarter and 36.0% of the lowest paid quarter.
Pay quartile breakdown