UK Explained
Trust

Data status

Every number on UK Explained comes from an official source. This page shows when each one was last fetched, and what we know about its limits. This site was last built on 2026-10-04.

When each dataset was fetched

Most datasets are fetched every night. Each one is checked before the site is rebuilt: if a check fails, the site keeps yesterday’s version.

DatasetSourceCoversFetchedStatusNotes
Commons votesCommons Votes APILast 12 months2026-10-04✓ Updated today265 votes
BillsParliament Bills APICurrent and recent sessions2026-10-04✓ Updated today218 bills
Lords votesLords Votes APILast 12 months2026-10-04✓ Updated today
Government financesHM Treasury (PESA), HMRC, ONS2025-262026-10-04✓ Updated todayLatest published outturn; can be revised
NHS waiting timesNHS England (RTT)July 20262026-10-04✓ Updated todayPublished monthly
Pay, jobs and election results by areaONS via Nomis, ParliamentPay 2025, claimants August 20262026-10-04✓ Updated today649 constituencies
PetitionsPetitions siteNow2026-10-04✓ Updated today
CommitteesParliament Committees APINow2026-10-04✓ Updated today
Registered interestsParliament Interests APINow2026-10-04✓ Updated today
Who lives here (Census 2021)ONS Census 2021 via the UK Data ServiceEngland and Wales, March 20212026-10-04✓ Updated todayScotland and Northern Ireland are not included
Release calendarGOV.UK statistics announcementsNext 10 weeks2026-10-04✓ Updated todayPowers the Coming up page
Pay, jobs, prices and debt over timeONS via Nomis and the ONS time seriesBack to 1989 to 2002, depending on the series2026-10-04✓ Updated todayPowers the Over time page
Ministers' meetingsGOV.UK transparency dataLatest quarter published by each department2026-10-04✓ Updated todayDepartments publish at different times
MP expensesIPSA2025-262026-10-04✓ Imported todayImported by hand; IPSA asks automated tools not to download its files

What the nightly checks look at

  • Every vote has a stored result and the named votes roughly match the published totals.
  • Spending by function adds up to total spending, and borrowing, receipts and population are in a sensible range.
  • Every constituency is matched to its pay, jobs and election figures.
  • NHS area figures add up to roughly the England total.

The checks are in scripts/check.py in the site’s open code.

Known limits

  • Subjects for votes are matched automatically from the words in a vote’s title, so they are approximate.
  • Money figures count the whole UK public sector and are in cash terms: they are not adjusted for rising prices.
  • Latest-year spending figures are outturn estimates and can be revised by the Treasury.
  • Pay and claimant figures are published for constituencies by the ONS, with a delay of several months.
  • MP expenses come from a file a person downloads from IPSA, so they update only when someone re-imports it.
  • Plain-English bill descriptions are written with an AI tool, then checked and approved by a named person before they appear.
  • Where a source is missing or fails a check, the site keeps the previous day’s version rather than showing wrong numbers.

Spotted a mistake?

Tell us on the About & corrections page. Corrections are published there with the date.