CS01 is the confirmation statement filing code at Companies House. This guide explains what CS01 means, what it can update, and why a CS01 should trigger a fresh review of the company record.
Guides
Practical guides for Companies House alerts and verification
These guides cover both the urgent verification questions people search in a panic and the operating problem inside firms: how to track deadlines, owners, blockers, and proof across a company or client portfolio without rebuilding the same spreadsheet every week.
Need a specific filing code first?
Start with the highest-signal Companies House filing codes now live in the public guide set.
AP01 is the Companies House appointment of director filing code. This guide explains what AP01 means, what it changes, and what teams should review next after a new director appears.
TM01 is the Companies House termination of director appointment filing code. This guide explains what TM01 means, what it does not tell you, and why it matters for governance monitoring.
CH01 is the Companies House filing code for a director's details change. This guide explains what CH01 means, what it can update, and what teams should review after it appears in filing history.
PSC01 is the Companies House filing code for an individual person with significant control being put on the register. This guide explains what PSC01 means, why it matters for ownership monitoring, and what to review next.
AD01 is the Companies House filing code for a registered office address change. This guide explains what AD01 means, why it matters operationally, and what to review after the company address changes.
CH02 is the Companies House filing code for a corporate director details change. This guide explains what CH02 means, what it can update, and what teams should review after it appears in filing history.
PSC02 is the Companies House filing code for a relevant legal entity with significant control being put on the register. This guide explains what PSC02 means, why it matters for ownership monitoring, and what to review next.
AD02 is the Companies House filing code for registering a single alternative inspection location. This guide explains what AD02 means, why it matters operationally, and what to review next.
PSC04 is the Companies House filing code for changing the details of an individual person with significant control. This guide explains what PSC04 means, why it matters for ownership monitoring, and what to review next.
PSC05 is the Companies House filing code for changing the details of a relevant legal entity with significant control. This guide explains what PSC05 means, why it matters for ownership monitoring, and what to review next.
PSC07 is the Companies House filing code for an individual ceasing to be a person with significant control. This guide explains what PSC07 means, why it matters for ownership monitoring, and what to review next.
Need a live monitoring page instead?
These public pages are built from live event states such as overdue deadlines, officer changes, and new PSC appointments.
Live company-register examples where Companies House currently marks the confirmation statement overdue, paired with the current public company page and monitoring context.
Live company-register examples where recent AP01, TM01, CH01, or CH02 filings signal an officer appointment, departure, or detail amendment worth reviewing.
Live company-register examples where recent PSC01 or PSC02 filings put a new person or entity with significant control onto the public record.
Verification Watch
FTSE 350 Companies Still Showing Overdue Director Verification Statement Gaps in Companies House Data
A broader FTSE 350 follow-up using public Companies House officer records to find active director appointments still showing overdue public verification statement fields, plus the due-soon queue and review boundary.
FTSE 350 Companies House verification
FTSE 100 and FTSE 250 Companies House verification
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Verification Watch
FTSE 250 Companies Still Showing Overdue Director Verification Statement Gaps in Companies House Data
A data-led FTSE 250 screen using public Companies House officer records to find active director appointments that still show overdue public verification statement fields, plus the caveats that matter.
FTSE 250 Companies House verification
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Overdue Guide
Companies House verification overdue: what happens next?
What happens if Companies House identity verification is overdue? Honest guidance on offences, filing blockers, PSC penalties, and the fastest next steps.
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PSC Penalty Guide
Missed PSC verification deadline: penalty, next steps, and what to do now
An honest answer to missed PSC verification deadline penalty queries, including what Companies House says about offences, financial penalties, fines, and extensions.
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Fine Guide
Companies House identity verification fine: what the guidance actually says
Companies House identity verification fine guidance explained honestly: prosecution, court fines, financial penalties, filing blockers, and what is not stated publicly.
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Penalty Amount Guide
How much is the Companies House verification penalty?
Searching for a fixed Companies House verification penalty amount? The public guidance does not appear to publish one universal number, so this guide explains what is stated and what to do instead.
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Extension Guide
Companies House verification extension: how to apply before the deadline passes
How to apply for a Companies House PSC identity verification deadline extension, when it is available, and what to do if the deadline has already passed.
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Verification Guide
Companies House Verification Tracker Checklist for 2026
A practical checklist for firms tracking Companies House identity verification deadlines, PSC verification requirements in 2026, and ACSP verification tracking across a client portfolio.
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PSC Guide
PSC Verification Requirements 2026 for Small UK Firms
A practical guide to PSC verification requirements in 2026, including PSC birth-month windows, post-confirmation-statement timing, new PSC roles, and the exception handling firms need in a real tracker.
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Deadline Guide
Companies House Identity Verification Deadline for Directors and PSCs
A practical guide to Companies House identity verification deadlines for directors and PSCs in 2026, including confirmation statement timing, PSC windows, and the workflow fields firms need to track.
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