How This Data Works
Biggest Brother aggregates public UK government data to provide a unified view of parliamentary activity, government spending, and political accountability. Every data point is sourced from official, publicly-available records — we do not scrape paywalled or private sources.
Data Sources & Freshness
| Source | Origin | Records | Update Frequency |
|---|---|---|---|
| MPs | Parallel Parliament + UK Parliament Members API | 647 | Daily |
| Bills | UK Parliament Bills API | 389 | Daily |
| Votes | UK Parliament Divisions API | 31,827 | Daily |
| Speeches | Hansard via TheyWorkForYou API | 8,907 | Daily |
| Events | Parallel Parliament activity feed | 44,189 | Daily |
| Contracts | Contracts Finder / Find a Tender (gov.uk) | 13,212 | Weekly |
| Financial Disclosures | Parallel Parliament register of interests | 8,733 | Weekly (Sunday 8pm) |
| Company Connections | Companies House API | 172 | Weekly |
| News Articles | BBC News, Guardian, and other UK RSS feeds | 7,163 | Hourly |
| Debt Metrics | ONS / Bank of England | 34 | Monthly |
| Pledge Contradictions | Automated comparison of voting records vs party manifestos | 16 | On new votes |
How Estimates Are Calculated
Estimated Net Worth
Derived from publicly declared financial interests: declared income bands (midpoint taken), donations, second-job earnings, estimated property values, and estimated shareholdings. All figures are lower-bound estimates — actual wealth may be higher.
⚠ Not all MPs declare full details. Property values are estimated from purchase prices and market indices. Shareholdings use declared ranges. This is a minimum estimate.
Pledge Contradictions
MP voting records are cross-referenced against their party's manifesto pledges. A contradiction is flagged when an MP votes against a specific, measurable manifesto commitment. Analysis is automated where possible using structured pledge data; editorial review is applied to flagged contradictions before publication.
⚠ Some votes are on complex legislation where a single vote may not fully represent an MP's position. Contradictions are disclosed with full context — the bill, the vote, and the specific pledge.
Donor & Contractor Matching
Company directors and persons with significant control (PSCs) are matched against MP donation declarations and government contract awards. Connections are established via Companies House data (directorships, shareholdings) and verified against multiple data points.
⚠ A connection does not imply wrongdoing. Many connections are historical or incidental. We present the data; interpretation is yours.
Vote Alignment
Pairwise agreement percentages between parties are calculated from all recorded division votes. An MP is counted as 'aligned' with another party when they vote the same way (Aye/Aye or No/No) on the same division.
⚠ Free votes and conscience votes are included, which may inflate apparent cross-party agreement. Party whips heavily influence most votes.
Important Caveats
- Data is updated on schedules shown above. Some sources may lag by hours or days.
- Financial figures are in GBP and not inflation-adjusted unless stated.
- MP activity events are sourced from Parallel Parliament, which may not capture every action.
- Spending data comes from government-published contract awards, which may differ from actual spend.
- Company connections reflect past and present roles — a current directorship may not indicate ongoing influence.
- This is a transparency tool, not a court of law. Context matters. We encourage users to follow source links and read original documents.
Found an Error?
Data errors, broken links, or misattributions can be reported to james@id4os.com. Please include the specific URL and a description of the issue. Corrections are typically applied within 48 hours.
Last updated: 26 May 2026