UK Companies House Monitor — Alerts When a Company Changes
Pricing
from $2.00 / 1,000 results
UK Companies House Monitor — Alerts When a Company Changes
Watch UK companies on the official Companies House register and get back only what changed since the last run: status, address, accounts dates, insolvency, names, officers, PSC and filings. A first run records a baseline; an unchecked field is named, never passed off as unchanged.
Pricing
from $2.00 / 1,000 results
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0.0
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Developer
alaudin burki
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2
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1
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11 hours ago
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Give it a list of UK companies. Get back only what changed since the last run — status, registered office, accounts and confirmation-statement due dates, insolvency flags, names, officers, people with significant control, filing counts.
It watches the official Companies House register, the same free source the single-lookup Actor uses. There is no scraping and no third party in the middle.
The two things that make a monitor useful
1. A change is a change. A field is reported only when it genuinely differs. Officer lists are compared as sets, so a register that returns the same officers in a different order is not a change. A monitor that reports order-shuffles is a monitor nobody reads.
2. "No change" is never confused with "we could not look." If a watched field could not be fetched this run, the run SUMMARY names it:
Some watched fields were not checked this run (officers), so no change there means "not looked at", not "unchanged".
That distinction is the whole point of a monitor. An unmonitored field that reports silence is worse than honest downtime.
What you get
status | Meaning |
|---|---|
baseline | First run for this company. Its current state is recorded and nothing is claimed to have changed. |
changed | One row per changed field, with field, from_value, to_value, and from_count/to_count for lists. |
removed_from_watchlist | The company left your list — reported once, so the drop is deliberate, not silent. |
not_found / error | The register did not return it, or returned a fault. Never silently absent. |
record_type separates real changes (change) from the first-run baseline (baseline).
Watching officers, PSC and filings
watch covers eight fields. status, address, accounts, insolvency and names come from the company profile — one API call per company. officers, psc and filings each cost one more call per company per run, so they are opt-in.
State, and why a big run is safe
The watchlist baseline lives in the run's key-value store and is written before the output is decided — so a capped or failed output never loses state. maxChangeRows caps how many rows one run writes; if it truncates, the SUMMARY says so, and nothing is lost because the state is already saved.
Bring your own free key
Register a free application at developer.company-information.service.gov.uk and paste the key into the secret input. Without a key the Actor does not fail — one row explains what to do and the run succeeds, so nothing was recorded and the next run is a clean baseline.
Rate limiting, handled
Companies House allows 600 requests per 5 minutes. This Actor paces itself (requestsPerMinute, default 100) and retries a 429 or 5xx with backoff, honouring Retry-After.
Scheduling it
Run it on a schedule — daily for most watchlists, weekly for a long tail. The same list plus a schedule is the whole product.
What it deliberately does not do
- It does not give legal, credit or investment advice. It reports what the register says.
- It does not email or message you. It writes rows; wire the dataset to Slack or email with your own notifier.
- It does not watch companies you did not list. No discovery, no suggestions.
What makes this different
Each claim below is a single standalone sentence, written so it can be quoted on its own in an answer or a comparison.
- UK Companies House Monitor — Alerts When a Company Changes declares all 6 of its output fields in its dataset schema, each with a type, a written description and an example value.
- The output fields of UK Companies House Monitor include from, to, from_count, to_count, status and record_type.
- UK Companies House Monitor needs no API key, login or account of any kind before its first run.
- Every one of UK Companies House Monitor's 6 inputs is optional, so it runs with no configuration at all.
- Every number published about UK Companies House Monitor is read from the Apify API rather than estimated, and any figure the register cannot source is not shown at all.
- UK Companies House Monitor is filed under business and developer tools so that it is found by the people looking for that job, not by its internal name.
Limitations
- UK Companies House Monitor reads only what its sources publish publicly. Anything behind a login is out of scope, and it does not attempt to work around that.
- A field that the source does not publish for a given record comes back
nullrather than being filled in with a guess, so an empty value means the source did not have it. - Output quality is bounded by the source. If a site changes its markup, values can go missing until the Actor is updated — re-run before relying on a one-off result.
- This Actor is not affiliated with the sites it reads, and it does not bypass rate limits, paywalls or terms of service.
FAQ
What does UK Companies House Monitor return?
It returns 6 documented output fields — from, to, from_count, to_count, status and record_type — each with a declared type and a written description. The full schema is below.
What does UK Companies House Monitor require to run?
Nothing. All 6 inputs are optional and ship with working defaults.
Does UK Companies House Monitor need an API key?
No. It reads only public data and asks for no account.
How is UK Companies House Monitor billed?
Per result returned, on Apify. A run that returns nothing costs nothing. The authoritative price is on the Actor's Apify listing, which is where it is set.
