SiteVerdict — UK Gender Pay Gap Data & Benchmarks

Every UK gender pay gap filing since 2017, matched to the employers you care about, benchmarked against their sector, with year-by-year trends, possibly-missing filings and alerts when new figures land.

Official open data from the UK Government gender pay gap service (Open Government Licence). No API key, no scraping, no proxies.

What you get

• 🏢 Employer reports: search by name, Companies House number or service id. Every year's mean and median hourly gap, bonus gaps, % of men and women receiving a bonus, women's share of each pay quartile, employer size, late-filing flag, written-statement link.
• 📈 Trend: change in the median gap (percentage points) between the first and last year, labelled narrowing, widening, stable or reversed, plus late filings and missing years.
• 🧭 Benchmark: the employer's percentile in its SIC sector and nationally, against the sector median.
• 🏭 Sector benchmarks: by SIC section (J), SIC prefix (62, 64191), public or all: employers, median of median gaps, quartiles, % paying men more, women in the top quartile, bonus gap, late-filing rate, per year.
• 🚩 Possibly-missing filings: employers that reported last year (250+ staff) but have nothing after this year's deadline, with a confidence level.
• 🔔 Monitor mode: schedule it and get Slack/webhook alerts when a watched employer files or amends its figures.
• 📄 CSV exports (employer-reports.csv, sector-benchmarks.csv) and an optional AI brief written by your own Anthropic/OpenAI key.

Who it is for

• HR, reward and DEI teams benchmarking against competitors and the sector before publishing their own figures.
• ESG analysts and investors screening portfolios for pay-equity trends and late or missing reporting.
• Journalists and researchers building sector league tables and year-on-year stories.
• Recruiters and employer-branding agencies preparing client comparisons.
• AI agents via the MCP tool uk_gender_pay_gap on the SiteVerdict MCP server.

Quick start

1. Add employers (one per line): Tesco Stores, 00445790, id:19070.
2. Optionally add sectors: J, 62, public.
3. Run. Try Sample mode first (no network, free).

Example input

{
  "employers": ["Tesco Stores", "Sainsbury's Supermarkets", "00445790"],
  "sectors": ["G", "47"],
  "yearFrom": 2021,
  "missingFilingsScope": "sectors",
  "monitorMode": true,
  "slackWebhookUrl": "<secret>"
}

Example output (live run 11 Oct 2026, abridged)

{ "recordType": "employer-report", "employerName": "TESCO STORES LIMITED", "employerId": "12141", "latestYear": 2025,
  "latest": { "medianHourlyGap": 4.8, "meanHourlyGap": 7.7, "femaleTopQuartile": 35.4, "submittedLate": false },
  "trend": { "firstYear": 2023, "lastYear": 2025, "changePp": -0.1, "direction": "stable", "lateFilings": 0, "missingYears": [] },
  "benchmark": { "sectorEmployers": 949, "sectorMedianOfMedianGap": 4.9, "nationalMedianOfMedianGap": 8, "percentileInSector": 49, "percentileNational": 40 } }

{ "recordType": "sector-benchmark", "sectorLabel": "SIC section J: Information and communication",
  "latest": { "year": 2025, "employers": 668, "medianOfMedianHourlyGap": 14, "p25MedianHourlyGap": 7, "p75MedianHourlyGap": 20.8, "pctEmployersPayingMenMore": 90.1, "medianWomenInTopQuartile": 24.2, "lateFilingPct": 5.8 } }

{ "recordType": "missing-filing-flag", "employerName": "BLUE STOCKINGS (UK) LIMITED", "missingYear": 2024, "deadline": "2025-04-05T00:00:00Z",
  "lastReportedYear": 2023, "lastReportedSize": "500 to 999", "confidence": "medium" }

Benchmarks above are from a live run over all filings (about 11,000 employers a year). Sample mode uses a 34-employer extract, so its sector and national figures are not representative.

How it works

• Downloads the official yearly CSVs (/viewing/download-data/{year}, ~4 MB each) once per run, politely (1.5 s between files, honest user agent).
• Snapshot years: 2025 means the reporting year 2025 to 2026 (snapshot 31 March / 5 April 2025, deadline April 2026). By default the last 5 years whose deadline has passed are used.
• Matching: exact on service id and company number; names are normalised (LTD/PLC/THE removed, & = AND) and scored (exact > prefix > all words). Raise Matches per employer query for groups with several legal entities.
• Missing filings are only checked for years whose deadline has passed, only for employers that reported ≥ 250 staff the year before, and are skipped when the same company number filed under a new id.

Pricing (pay per event)

Event	Price	When
employer-report	$0.01	one employer with all years, trend and benchmark
sector-benchmark	$0.02	one sector with per-year statistics
missing-filing-flag	$0.005	one possibly-missing filing
filing-change-alert	$0.01	a watched employer filed or amended figures (monitor mode)
ai-brief	$0.05	only when your own AI key returns a brief

Examples: 50 competitors + 2 sectors ≈ $0.54. A whole sector's missing-filing sweep (e.g. 300 flags) ≈ $1.50. Errors, not-found rows, summaries and sample mode are free. No start fee.

FAQ

Is a pay gap the same as unequal pay? No. The gap compares average hourly pay of all men and all women; unequal pay is paying people differently for equal work.

Why is an employer missing? Only employers with 250+ staff must report. Names change (use the company number), and public bodies report under their own names.

Does "possibly missing" mean they broke the law? No. They may have dropped below 250 staff, merged, been dissolved or reported under another entity. Treat it as a lead to check.

Can I get the person who signed off each report? The files include a "responsible person". It is off by default (data minimisation). Only enable it with a lawful basis.

Limits

• Great Britain reporting only (the service covers England, Wales and Scotland employers; Northern Ireland has separate rules).
• Figures are self-reported and not audited. Some employers file late or amend later; monitor mode catches amendments.
• Max 500 employer queries, 50 sectors and 12 years per run.

Sources & compliance

• Source: UK Government gender pay gap service, yearly downloads https://gender-pay-gap.service.gov.uk/viewing/download (column glossary on that page). Checked 11 Oct 2026.
• Licence: Open Government Licence v3.0 (site footer: "All content is available under the Open Government Licence v3.0, except where otherwise stated"). Attribution is attached to every row: Contains public sector information from the UK Government gender pay gap service, licensed under the Open Government Licence v3.0.
• robots.txt: none published (the path returns an error page); we download 1 file per year per run with a 1.5 s gap and an honest user agent SiteVerdict/uk-gender-pay-gap (hello@webrevenuescan.com).
• Personal data: the only personal field ("responsible person") is excluded unless you switch it on. UK GDPR: you are the controller for how you use outputs; do not use them to profile or contact individuals. PECR does not apply (no electronic marketing).
• Not legal, HR or investment advice. Not affiliated with or endorsed by the Government Equalities Office or Cabinet Office.