Most weeks we look at what a company is (its SIC code) or how visible it is (its digital confidence score). This week we looked at something more mechanical but arguably more useful for day-to-day monitoring: the type of the most recent filing each of our 650 tracked companies has lodged with Companies House.
The split is lopsided in a way that’s worth understanding rather than skimming past. 378 companies — 58% of the tracked population — last filed form AA, full or abbreviated annual accounts. 135 companies, just over a fifth, last filed a CS01, the annual confirmation statement that verifies officer, shareholder and registered-office details without touching the financials. The remaining fifth is scattered across a long tail: AP01/AP02 officer appointments, CH01 officer-detail changes, MR01/MR04 mortgage charge filings, TM01 officer terminations, PSC filings tracking beneficial-ownership changes, and a handful of dissolution and resolution filings.
Why does this split matter? Because “latest filing type” is a cheap, always-available proxy for where a company currently sits in its compliance calendar — and that’s a different question from “is this company healthy.” A company whose latest filing is AA has just cleared its biggest annual disclosure hurdle and won’t be required to file anything substantial again until next year’s accounts or its next confirmation statement, whichever comes first. A company whose latest filing is CS01 has recently confirmed its structure is current but hasn’t necessarily filed fresh financials — its accounts on record could be anywhere up to 21 months old, right up against the statutory filing deadline. Neither state is inherently a red flag. But conflating the two, treating “filed something recently” as a uniform health signal, misses the more useful read: what was filed tells you what part of the company’s disclosure obligations was just satisfied, not whether the underlying business is thriving.
The tail is where the more interesting single-company signals live. A CH01 (officer detail change) or AP01 (officer appointment) as the most recent filing, ahead of a routine confirmation statement or accounts, often means a governance event just happened, a new director, a registered-address change, a name correction, and hasn’t yet been followed by the next scheduled compliance filing. TM01 (officer termination) sitting as the latest filing is the same pattern in reverse. These aren’t noise; for a procurement or credit team watching a vendor, an out-of-cycle officer filing landing between the expected AA/CS01 rhythm is exactly the kind of signal that’s easy to miss if you’re only checking “has this company filed recently” rather than “what did they just file.”
This week’s pull also surfaced a smaller structural point worth a caveat-heavy mention rather than a headline claim: of the 650 companies we track, 630 are standard England & Wales limited companies (numeric company numbers), 12 are LLPs (OC-prefixed numbers), 6 are Northern Ireland-registered (NI-prefixed), and 2 are Scottish (SC-prefixed). The England & Wales group averages £25.0m turnover; the six Northern Ireland companies average £55.4m — more than double. With only six companies in that group, this is far too small a sample to call a genuine NI-vs-GB pattern, and we’re flagging it as exactly that: an observation worth watching if the NI-registered slice of our tracked population grows, not a conclusion to act on today. LLPs, by contrast, run a lower average filing count (41 filings on record versus 81.5 for standard limited companies) despite broadly similar officer counts, likely a function of LLPs’ simpler statutory filing regime rather than any difference in operational maturity.
None of this replaces reading the actual filing content, and a filing-type tally is a blunter instrument than the ratio-level and director-history signals we surface elsewhere. But as a first-pass triage question, “what did this company file most recently, and does it fit the expected AA/CS01 rhythm” is a fast, free way to sort a watchlist into “on schedule” versus “something changed” before spending analyst time on the filings themselves.