Pricing

The site and current-value API are free forever — the paid tiers buy the machine-readable history (asof), the changes feed, higher limits and, at Company tier, a freshness SLA. Tiers map to how you consume: runtime integrators subscribe; twice-a-year updaters take snapshots or the free bulk.

Free

£0

forever · Discovery, citation, low-volume current-value reads

  • Every figure on the site — no account, no cookies
  • Unauthenticated API: current values, fair-use limits
  • MCP server access (free tier over MCP transport)
  • Delayed bulk dataset per release (public releases repo)

Obligation owed: None — best effort

No signup — just use it

Metered PAYG

~£0.01–0.03/call

£10 minimum top-up · credits valid 12 months · Low-volume and experimental integrations

  • Everything in Free
  • As-of history endpoint, per call
  • Changes feed, per call

Obligation owed: No SLA

Coming soon — payments are not yet open.

Solo

£29/mo

or £290/yr · Independent developers

  • Everything in Free
  • Keyed API: as-of history, changes feed
  • Higher rate limits
  • Uptime target (no contractual SLA)

Obligation owed: Uptime target

Coming soon — payments are not yet open.

Company

£149–249/mo

monthly · HR, payroll and legal-tech SaaS

  • Everything in Solo
  • Freshness SLA: divergence flagged < 24h
  • Correction notices to your inbox
  • Real-time bulk access

Obligation owed: Freshness SLA + correction notices

Coming soon — payments are not yet open.

Release snapshot

~£99

one-off, per release · Vendoring a release into your own system

  • Signed dataset (JSON + SQLite) for one release
  • Manifest with per-record hashes
  • No ongoing obligation after delivery

Obligation owed: None after delivery

Coming soon — payments are not yet open.

No indemnity is offered at any tier — see the disclaimer and terms. Keys are issued manually at present; paid capabilities require the key on every surface, MCP included.