For Professional Services Firms and in-house secretaries

Never miss a confirmation statement again.

The quiet co-pilot for company secretarial work. CoSec Companion tracks every filing deadline across your client book — or your own — and tells you what's due, what's drafted, and what just needs your signature.

No card required. Connects to Companies House in under 2 minutes.

What it does

Statutory work, finally legible.

Every deadline, one calendar

Confirmation statements, accounts, corporation tax returns, PSC updates, AGM dates — all in a single roll-up across your book or your firm.

Generated, not guessed

Filing dates are calculated from incorporation, ARD, and rule chains — the same engine HMRC and Companies House use, applied automatically the moment an entity is added.

Quiet by design

No bright dashboards or noisy notifications. A list of what's due, what's drafted, and what just needs your signature.

For Professional Services Firms

A roll-up calendar across every client.

One client may be a single Ltd or a parent with subsidiaries. Group entities under a client, drill in by client or entity, and never search across spreadsheets again. Filing focus: CS01, CT600, statutory accounts, AP01/TM01.

For in-house secretaries

The wider cosec remit, in one place.

Confirmation statements, AP01/TM01/CH01, AD01, PSC01/07, AGM, share allotments, charges. Designed for the part-time or stretched company secretary in a single firm or small group. No client gate — your entities, listed directly.

Get started

Connect Companies House, pick your view, and the calendar populates itself.