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Data.parliament.uk vs Gazette Data, UK

Same instrument, two spec sheets — measured, not claimed.

APIData.parliament.ukNEW—Gazette Data, UKNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseOpen Parliament LicenceUnverified
Free tierFree / open dataFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Data.parliament.uk vs Gazette Data, UK: common questions

Which is more reliable, Data.parliament.uk or Gazette Data, UK?

On our scheduled checks, Gazette Data, UK leads on measured uptime — Data.parliament.uk at —% versus Gazette Data, UK at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Data.parliament.uk and Gazette Data, UK need an API key?

Data.parliament.uk needs no key, while Gazette Data, UK requires a free API key. If you want to start calling without signup, reach for Data.parliament.uk first.

Can I call Data.parliament.uk and Gazette Data, UK from the browser?

Yes — both Data.parliament.uk and Gazette Data, UK send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Data.parliament.uk and Gazette Data, UK free for commercial use?

Data.parliament.uk allows commercial use on its free tier, and Gazette Data, UK has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.