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.

This company has been viewed 0 times in the last 30 days.

Last submission received on Wednesday, 1 Apr 2026 at 10:34 UTC.

Employer ID 16263
Company Number RC000749
Employer Size 500 to 999
Years Submitted
201720182019202020212022202320242025

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%

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.

Mean hourly pay gap 11.5%
Median hourly pay gap 5.1%
Men receiving bonus 1.9%
Women receiving bonus 0.5%
Mean bonus gap 37.5%
Median bonus gap 0.0%

Pay quartile breakdown

Women
Men
Top quartile 52.0%
48.0%
Upper-middle 67.0%
33.0%
Lower-middle 62.0%
38.0%
Lower quartile 68.0%
32.0%
2024 Mean pay gap 8.4%

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.

Mean hourly pay gap 8.4%
Median hourly pay gap -0.2%
Men receiving bonus 3.9%
Women receiving bonus 2.2%
Mean bonus gap 46.9%
Median bonus gap 0.0%

Pay quartile breakdown

Women
Men
Top quartile 53.4%
46.6%
Upper-middle 67.5%
32.5%
Lower-middle 60.9%
39.1%
Lower quartile 55.7%
44.3%
2023 Mean pay gap 7.7%

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.

Mean hourly pay gap 7.7%
Median hourly pay gap -0.6%
Men receiving bonus 100.0%
Women receiving bonus 100.0%
Mean bonus gap 7.2%
Median bonus gap 0.0%

Pay quartile breakdown

Women
Men
Top quartile 52.1%
47.9%
Upper-middle 64.4%
35.6%
Lower-middle 56.0%
44.0%
Lower quartile 59.9%
40.1%
2022 Mean pay gap 8.4%

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.

Mean hourly pay gap 8.4%
Median hourly pay gap 0.0%
Men receiving bonus 42.0%
Women receiving bonus 58.0%
Mean bonus gap 1.8%
Median bonus gap 0.0%

Pay quartile breakdown

Women
Men
Top quartile 52.2%
47.8%
Upper-middle 64.8%
35.2%
Lower-middle 58.4%
41.6%
Lower quartile 58.0%
42.0%
2021 Mean pay gap 7.2%

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.

Mean hourly pay gap 7.2%
Median hourly pay gap 0.0%
Men receiving bonus 0.0%
Women receiving bonus 0.0%

Pay quartile breakdown

Women
Men
Top quartile 48.3%
51.7%
Upper-middle 61.6%
38.4%
Lower-middle 58.6%
41.4%
Lower quartile 52.9%
47.1%
2020 Mean pay gap 6.8% Late submission

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.

Mean hourly pay gap 6.8%
Median hourly pay gap -0.2%
Men receiving bonus 0.0%
Women receiving bonus 0.0%

Pay quartile breakdown

Women
Men
Top quartile 51.0%
49.0%
Upper-middle 61.2%
38.8%
Lower-middle 64.7%
35.3%
Lower quartile 50.3%
49.7%
2019 Mean pay gap 7.5%

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.

Mean hourly pay gap 7.5%
Median hourly pay gap 0.0%
Men receiving bonus 33.3%
Women receiving bonus 66.6%
Mean bonus gap 40.0%
Median bonus gap 40.0%

Pay quartile breakdown

Women
Men
Top quartile 54.0%
46.0%
Upper-middle 66.0%
34.0%
Lower-middle 58.0%
42.0%
Lower quartile 63.0%
37.0%
2018 Mean pay gap 10.1%

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.

Mean hourly pay gap 10.1%
Median hourly pay gap 0.1%
Men receiving bonus 2.3%
Women receiving bonus 5.9%
Mean bonus gap -36.7%
Median bonus gap 0.0%

Pay quartile breakdown

Women
Men
Top quartile 50.0%
50.0%
Upper-middle 68.0%
32.0%
Lower-middle 58.0%
42.0%
Lower quartile 61.0%
39.0%
2017 Mean pay gap 11.2%

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.

Mean hourly pay gap 11.2%
Median hourly pay gap 6.2%
Men receiving bonus 7.6%
Women receiving bonus 8.6%
Mean bonus gap 22.0%
Median bonus gap 0.0%

Pay quartile breakdown

Women
Men
Top quartile 47.1%
52.9%
Upper-middle 61.6%
38.4%
Lower-middle 60.5%
39.5%
Lower quartile 58.5%
41.5%