UK Civil Aviation Authority

aid: uk-caa
url: https://raw.githubusercontent.com/api-evangelist/uk-caa/refs/heads/main/apis.yml
name: UK Civil Aviation Authority
kind: company
description: 'The UK Civil Aviation Authority (CAA) is the United Kingdom''s independent aviation regulator and a public corporation
  of the Department for Transport. It licenses UK airlines, registers UK civil aircraft on the G-INFO register, regulates
  airspace and airports, economically regulates Heathrow and Gatwick, enforces UK air passenger rights, and — the part that
  matters most to travel distribution — runs the Air Travel Organiser''s Licence (ATOL) scheme, which is the statutory gate
  every business selling flight-inclusive packages to UK consumers must pass through, including sellers established outside
  the UK. The CAA sits above the distribution chain rather than inside it: it does not distribute inventory, does not operate
  a GDS or NDC connection, and has no NDC posture of its own. Its API posture is thin and honest to record — there is no developer
  portal, no OpenAPI, and no published aviation data API. The only documented, self-serve, key-free public API on a CAA domain
  is the Citizen Space (Delib) consultation API at consultations.caa.co.uk/api, a vendor platform API rather than an aviation
  data API. The aviation surfaces that do exist — the G-INFO aircraft register search and the Check an ATOL search — are undocumented
  ASP.NET JSON backends whose CORS policy is locked to www.caa.co.uk and which are reCAPTCHA-gated. Bulk aviation data is
  delivered as CSV, PDF and XLSX files behind opaque GUID download URLs, and the full G-INFO aircraft register is a paid subscription
  emailed as an MS Excel file licensed for use on a single PC. Home market is the United Kingdom.'
image: https://www.caa.co.uk/apple-touch-icon.png
tags:
- Travel
- United Kingdom
- Aviation
- Airline
- Airports
- Regulator
- Government
- Distribution
- Consumer Protection
- Open Data
created: '2026-07-28'
modified: '2026-07-28'
specificationVersion: '0.19'
apis:
- aid: uk-caa:caa-consultations-api
  name: CAA Consultations API
  description: The Citizen Space (Delib) public consultation API deployed on the CAA's consultations domain. Two documented
    methods — json_search_results and json_consultation_details — return published CAA consultation activities as JSON with
    no API key and no signup. Versions 2.0 through 2.4 are served concurrently. Verified live 2026-07-28 (HTTP 200, JSON array).
    This is the only documented, publicly callable API on a caa.co.uk domain; it is the vendor's platform API, not a CAA aviation
    data API.
  humanURL: https://consultations.caa.co.uk/api/2.4/
  baseURL: https://consultations.caa.co.uk/api/2.4
  tags:
  - Consultations
  - Government
  - United Kingdom
  properties:
  - type: Documentation
    url: https://consultations.caa.co.uk/api/2.4/
  - type: Documentation
    url: https://consultations.caa.co.uk/api/
  - type: APIReference
    url: https://consultations.caa.co.uk/api/2.4/
  - type: APIReference
    url: https://consultations.caa.co.uk/api/2.3/
  - type: GettingStarted
    name: API v2.x Developers' Guide
    url: https://help.delib.net/article/350-api-v2-x-developers-guide
  - type: OpenAPI
    name: CAA Consultations API 2.4 (transcribed by API Evangelist from the published reference)
    url: openapi/uk-caa-consultations-api-openapi.yml
  - type: Overlay
    url: overlays/uk-caa-consultations-api-overlay.yaml
  - type: Examples
    name: Verified live json_search_results response (st=open, fields=all)
    url: examples/uk-caa-json-search-results-open-all.json
  - type: Examples
    name: Verified live json_consultation_details response (fields=all)
    url: examples/uk-caa-json-consultation-details-all.json
  - type: JSONSchema
    name: Consultation activity (derived from the transcribed OpenAPI)
    url: json-schema/uk-caa-activity.json
  - type: JSONSchema
    name: Term (audience, area or interest)
    url: json-schema/uk-caa-term.json
  - type: JSONSchema
    name: Supporting document
    url: json-schema/uk-caa-supporting-document.json
  - type: JSONSchema
    name: Related link
    url: json-schema/uk-caa-related-link.json
  - type: Vocabulary
    name: CAA consultation vocabulary derived from the full live corpus (294 activities)
    url: vocabulary/uk-caa-vocabulary.yml
  - type: Website
    url: https://consultations.caa.co.uk/
common:
- type: AgenticAccess
  url: agentic-access/uk-caa-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/uk-caa-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/uk-caa-domain-security.yml
- type: Security
  name: CAA Vulnerability Disclosure Policy
  url: https://www.caa.co.uk/website-policies/vulnerability-disclosure-policy/
- type: WellKnown
  url: well-known/uk-caa-well-known.yml
- type: SecurityTxt
  name: security.txt captured verbatim 2026-07-28
  url: well-known/uk-caa-security.txt
- type: LLMsTxt
  name: CAA llms.txt (provider-published, captured verbatim)
  url: llms/uk-caa-llms.txt
- type: LLMsTxt
  name: ATOL llms.txt (provider-published, captured verbatim)
  url: llms/uk-caa-atol-llms.txt
- type: Authentication
  url: authentication/uk-caa-authentication.yml
- type: Conventions
  url: conventions/uk-caa-conventions.yml
- type: Lifecycle
  url: lifecycle/uk-caa-lifecycle.yml
- type: ChangeLog
  name: Citizen Space API version history reconstructed from the 2.0-2.4 reference pages
  url: changelog/uk-caa-changelog.yml
- type: Conformance
  url: conformance/uk-caa-conformance.yml
- type: ErrorCatalog
  url: errors/uk-caa-problem-types.yml
- type: DataModel
  url: data-model/uk-caa-data-model.yml
- type: Vocabulary
  name: UK CAA consultation vocabulary — 19 workspaces, 47 audiences, 43 interests, derived from 294 live activities
  url: vocabulary/uk-caa-vocabulary.yml
- type: Packages
  name: Registry search record — the CAA publishes no SDK or client library in any language
  url: packages/uk-caa-packages.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Arazzo
  name: Track UK CAA consultations
  url: arazzo/uk-caa-track-consultations.yml
- type: Website
  url: https://www.caa.co.uk/
- type: Documentation
  url: https://www.caa.co.uk/data-and-analysis/
- type: Documentation
  name: CAA publications (CAP documents) — the authoritative regulatory library
  url: https://www.caa.co.uk/publications/
- type: Pricing
  name: G-INFO forms and fees — pricing and licence terms for the UK aircraft register data product. The CAA's only published
    price list for machine-usable data; there is no API pricing because there is no commercial API programme.
  url: https://www.caa.co.uk/aircraft-register/g-info/g-info-forms-and-fees/
- type: Blog
  url: https://www.caa.co.uk/newsroom/news/
- type: LinkedIn
  url: https://www.linkedin.com/company/civil-aviation-authority
- type: X
  url: https://x.com/UK_CAA
- type: YouTube
  url: https://www.youtube.com/user/UKCAA
- type: Instagram
  url: https://www.instagram.com/uk.caa
- type: VulnerabilityDisclosure
  url: https://www.caa.co.uk/website-policies/vulnerability-disclosure-policy/
- type: SecurityTxt
  url: https://www.caa.co.uk/.well-known/security.txt
- type: CustomerPortal
  name: CAA Customer Portal — ADFS sign-in for licence and certificate holders. NOT a developer portal; the CAA publishes
    none.
  url: https://portal.caa.co.uk
- type: PrivacyPolicy
  url: https://www.caa.co.uk/about-us/the-civil-aviation-authority/general-privacy-notice/
- type: Support
  name: Contact the CAA (general enquiries — there is no developer support channel)
  url: https://www.caa.co.uk/about-us/information-requests/contact-us/
- type: Accessibility
  url: https://www.caa.co.uk/website-policies/accessibility-statement/
- type: Registry
  url: https://www.caa.co.uk/aircraft-register/g-info/search-g-info/
- type: Registry
  url: https://www.caa.co.uk/atol-protection/check-an-atol/search-atol-holders/
- type: Dataset
  url: https://www.caa.co.uk/data-and-analysis/uk-aviation-market/airports/uk-airport-data/
- type: Dataset
  url: https://www.caa.co.uk/data-and-analysis/uk-aviation-market/flight-punctuality/uk-flight-punctuality-statistics/
- type: Dataset
  url: https://www.caa.co.uk/atol-protection/check-an-atol/atol-reports/
- type: Dataset
  url: https://ckan.publishing.service.gov.uk/api/3/action/organization_show?id=civil-aviation-authority
- type: Legal
  url: https://www.caa.co.uk/atol-protection/atol-requirements-for-the-travel-industry/do-i-need-an-atol/
- type: Legal
  url: https://www.caa.co.uk/atol-protection/atol-compliance/requirements-legal-obligations/airline-ticket-agents/
- type: Legal
  url: https://www.caa.co.uk/about-us/information-requests/accessing-information-held-by-the-caa/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com