Finding Off-Market Businesses to Buy in the UK with Companies House Data (2026)

Buyers searching for a UK business usually start at the marketplaces (Rightbiz, Daltons, BusinessesForSale) and hit the same wall American buyers hit on BizBuySell. Whatever is visible is already in a sales process, and every other buyer in the country is looking at it the same week. The established trade business or practice you actually want tends to change hands before any advert goes up. A long-serving foreman takes it on. Or the firm two streets over that has been asking for years finally gets a yes.

The UK gives you a way around that, and it's a public one. Companies House publishes company information, current and resigned officers, and document images free of charge, and the live register also goes out as a monthly bulk download. A careful buyer can build a ranked off-market target list from it without spending a pound. This guide shows how, and where each signal sits.

What the register actually gives you

Every company on the register is in it. Companies House records the incorporation date, registered address, filing history and status for each company. Search is free, there's a public API you register an account and a key for, and the live register is published as a monthly ZIP of CSV files, refreshed within five working days of the previous month end. No US source has that coverage in one place. American buyers assemble the same picture out of SBA loan filings and fifty separate state registries.

Incorporation dates are exact. A company incorporated in 1994 has three decades of documented history behind it. Longevity is the most useful public proxy anyone has for both business durability and owner life-stage (the full argument is in our piece on owner succession and off-market deals), and in the UK it comes straight off the register.

Director ages are public. For directors appointed after 10 October 2015, Companies House shows the month and year of birth on the public register, while the full date stays private. There's no US public source that offers the equivalent. A sole director born in 1958 who has run the same company since 1995 is a long way into the ownership arc. Use it respectfully. It's public information, and the outreach it informs should never mention it.

Ownership is visible. The PSC register (persons with significant control) names anyone holding more than 25% of a company's shares or voting rights, anyone who can appoint or remove a majority of the directors, and anyone who otherwise controls it. Read it and you can tell a genuine owner-operator from a subsidiary or a private-equity-held platform before you write a single letter.

Accounts tell you something, just not profit. A small company can choose whether to send its profit and loss account and director's report to Companies House, and most leave both out. What you do get is a balance sheet, sometimes an employee count, and a filing history that shows whether the operation is run tightly. No public source anywhere gives you reliable profitability, and any tool claiming to compute it is guessing.

The method, step by step

1. Filter the register by sector and geography

Companies House data carries SIC codes, the UK's industry classification, alongside registered addresses. Pull active companies in your target SIC codes, say 43220 (plumbing, heat and air-conditioning installation) or 86230 (dental practice activities), inside the city or region you want to own a business in.

2. Rank by incorporation date

Sort oldest first. A company incorporated in 1999 has come through at least two recessions and carries customers who have been buying from it for years, and its owner is a long way into the ownership arc. Where a business was restructured under a new entity, the filing history and previous-names records usually reveal the real lineage.

3. Layer the succession signals

Cross-reference director birth months against appointment dates. The profile worth flagging is a director in their sixties, appointed decades ago, sole or dominant PSC, with no younger directors turning up on recent filings. That last detail matters. A company that appointed a 35-year-old director last year may have already solved succession internally.

4. Measure local fragmentation

Count the independent operators in the same SIC code and city. OpenStreetMap establishment density works as a free cross-check. Many small independents and no consolidator means proprietary targets and a better negotiating position. Our guide to market fragmentation as a roll-up signal covers the logic, and it carries over to the UK unchanged.

5. Write the letter before the agent is engaged

Owners weighing an exit tend to talk it through with their accountant well before they ring a business transfer agent. The gap between quietly weighing it and being in a process is where a respectful direct approach wins, often as the only offer on the table.

Where the inventory is

Scouly's UK coverage currently tracks 35,920 off-market companies across 15 metros, scored on Companies House longevity and local market fragmentation. UK companies carry no SBA or PPP signals, because those are US programs, and Scouly's UK scoring makes no such claims. The deepest UK markets:

By vertical, UK coverage is deepest in niche manufacturing (9,476 companies), then auto repair (8,847), HVAC and plumbing (8,335), and dental practices (5,014). Browse any of them from the Markets index.

How Scouly fits

Scouly automates steps 1 to 4. Every UK company in its coverage is scored 0 to 100 on registry longevity and local fragmentation, and each profile links to the source records behind its score. The register is free and this guide is the full manual method, so what Scouly is really selling is the hours and the scoring discipline. The free Explorer tier comes with 10 full profile unlocks. Operator is $35 a month with unlimited unlocks. Build your thesis, free and rank every tracked company in a UK metro against your own criteria.

Scouly never estimates revenue or EBITDA and never contacts owners. UK profiles cite no SBA or payroll data, because none exists for a UK company. The outreach is drafted for you and sent by you.

Frequently asked questions

Is Companies House data really free to use for finding acquisition targets? Yes. Company information, incorporation dates, current and resigned officers, and document images are free on the Companies House service, and the live register is published as a free monthly bulk download in CSV form. Researching acquisition targets with it is an ordinary, lawful use of public information. Programmatic access runs through the Companies House API, which you register a user account and an API key for.

How do I find UK businesses for sale that aren't listed on Rightbiz or Daltons? Invert the process. Build a list of companies whose register profile suggests an approaching transition (decades since incorporation, an owner-director in their sixties, no visible successor) and approach those owners directly, before a transfer agent is engaged. Browsing seller listings only ever shows you businesses that already have a price and an audience. Most of what you would actually want to buy never reaches a listing site.

What does a director's age tell me, and is it appropriate to use? For directors appointed after 10 October 2015, Companies House publishes the month and year of birth, so owner life-stage reads straight off the register. It's the clearest succession signal in any free public dataset, it's public information, and considering it is lawful. Good practice is to let it inform who you contact and never what you say in the letter itself.

Can I see a UK company's revenue or profit before contacting the owner? Usually not. A small company can choose whether to file a profit and loss account with Companies House, and most leave it out. You can still see balance sheet data, sometimes an employee count, and whether filings arrive on time, which is enough to confirm the business is real and substantial. Financial detail comes from the owner, in conversation, under NDA.

Which SIC codes should I search for a trade or practice acquisition? Start with the code matching the core activity, then widen. 43220 is plumbing, heat and air-conditioning installation. 86230 is dental practice activities. 45200 is maintenance and repair of motor vehicles. Owners sometimes pick a neighbouring code when they incorporate, so check two or three adjacent codes before concluding a city has no targets. The condensed list from Companies House has all of them.

Sources

By Nishkal Dachepelly, founder of Scouly. . .