What we shipped, month by month, since February 2026

Registrum started as a single endpoint over the Companies House API in February 2026. This page is the dated record of what has been added since, taken from the commit history rather than from memory. Every entry names the month it actually shipped.

February 2026 - the first endpoints

The API's first commit landed on 11 February 2026: company search and company profiles, with request coalescing and upstream rate limiting added two days later so that concurrent callers asking for the same company never turned into duplicate Companies House traffic.

iXBRL financial extraction shipped on 26 February. This is the part most people expect to be simple and is not: UK companies file accounts as iXBRL documents, and turning those into comparable numbers means handling real taxonomy variation across thousands of filings. It has been running ever since.

The website scaffold followed on 27 February.

March 2026 - ownership, monitoring and the MCP server

March is when the data got deep rather than wide.

• 4 March - @registrum/mcp published, so an AI assistant could query UK company data directly.
• 5 March - PDF accounts parsing, extending financial data to roughly 1.25 million more companies whose accounts are not machine-readable at all.
• 11 March - webhook subscriptions with signed delivery, and the first KYB report endpoint aggregating profile, financials, directors and risk flags.
• 12 March - the PSC endpoint, with control types decoded, active and ceased holders separated, and exemptions detected.
• 13 March - PSC chain resolution: following a company's owners through intermediate holding companies to the people at the end of the chain. This is the capability behind every ownership question we answer today.
• 17 March - asynchronous batch enrichment, for callers processing a list rather than one company.

May 2026 - ECCTA identity verification

8 May: the compliance endpoint, reading Companies House's identity-verification records for directors and PSCs. The Economic Crime and Corporate Transparency Act makes verification mandatory, with enforcement from 18 November 2026, and the deadline is per company rather than one national date.

16 May: change monitoring. Directors and PSCs are watched, and a webhook fires when something moves.

July 2026 - open company pages

12 July: company pages became readable without an account, with structured data for search engines. Anyone can look up a UK company and see real data.

Also in July: the standalone ECCTA plan, monitoring caps, and the first cohort of ECCTA-window companies.

August 2026 - the keyless endpoint

7 August: a hosted MCP endpoint at /api/mcp that needs no account and no API key. Point an AI assistant at it and ask about a UK company. This remains the shortest path from never having heard of us to real data.

Checking any of this yourself

Everything above is externally verifiable, which is the point of publishing it:

• The MCP package and its release history are public on npm as @registrum/mcp.
• The keyless endpoint is live at https://registrum.co.uk/api/mcp - no signup, so you can test the claim in this page directly.
• Company pages render real Companies House data without an account, for example https://registrum.co.uk/company/00445790.

Dates on this page come from the commit history of the API, website and MCP repositories.