THE ZOOLOGICAL SOCIETY OF LONDON
THE ZOOLOGICAL SOCIETY OF LONDON 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 10:34 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 11.5%
Submitted on Wednesday, 1 Apr 2026 at 10:34 UTC.
In this organisation, women earned 95p for every £1 that men earned when comparing median hourly pay.
Women made up 52.0% of the highest paid quarter and 68.0% of the lowest paid quarter.
Pay quartile breakdown
2024 Mean pay gap 8.4%
Submitted on Monday, 7 Apr 2025 at 16:40 UTC.
In this organisation, women earned £1.00 for every £1 that men earned when comparing median hourly pay.
Women made up 53.4% of the highest paid quarter and 55.7% of the lowest paid quarter.
Pay quartile breakdown
2023 Mean pay gap 7.7%
Submitted on Tuesday, 2 Apr 2024 at 10:33 UTC.
In this organisation, women earned £1.01 for every £1 that men earned when comparing median hourly pay.
Women made up 52.1% of the highest paid quarter and 59.9% of the lowest paid quarter.
Pay quartile breakdown
2022 Mean pay gap 8.4%
Submitted on Tuesday, 11 Apr 2023 at 09:32 UTC.
In this organisation, women and men earned the same median hourly pay.
Women made up 52.2% of the highest paid quarter and 58.0% of the lowest paid quarter.
Pay quartile breakdown
2021 Mean pay gap 7.2%
Submitted on Friday, 1 Apr 2022 at 12:30 UTC.
In this organisation, women and men earned the same median hourly pay.
Women made up 48.3% of the highest paid quarter and 52.9% of the lowest paid quarter.
Pay quartile breakdown
2020 Mean pay gap 6.8% Late submission
Submitted on Tuesday, 12 Oct 2021 at 16:08 UTC.
In this organisation, women earned £1.00 for every £1 that men earned when comparing median hourly pay.
Women made up 51.0% of the highest paid quarter and 50.3% of the lowest paid quarter.
Pay quartile breakdown
2019 Mean pay gap 7.5%
Submitted on Tuesday, 12 Oct 2021 at 15:18 UTC.
In this organisation, women and men earned the same median hourly pay.
Women's median bonus pay was 40.0% lower than men's.
Women made up 54.0% of the highest paid quarter and 63.0% of the lowest paid quarter.
Pay quartile breakdown
2018 Mean pay gap 10.1%
Submitted on Monday, 1 Apr 2019 at 14:19 UTC.
In this organisation, women earned 100p for every £1 that men earned when comparing median hourly pay.
Women made up 50.0% of the highest paid quarter and 61.0% of the lowest paid quarter.
Pay quartile breakdown
2017 Mean pay gap 11.2%
Submitted on Thursday, 15 Mar 2018 at 11:58 UTC.
In this organisation, women earned 94p for every £1 that men earned when comparing median hourly pay.
Women made up 47.1% of the highest paid quarter and 58.5% of the lowest paid quarter.
Pay quartile breakdown