Company search
Search by company name, or leave it blank and search purely on filters. Results come live from the official Companies House API, 20 per page.
Features
Discover clients.Research the opportunity.
ClientFinch brings Companies House discovery, company research and a private prospect list into one calm interface — so you spend less time searching and more time talking to businesses that need you.
01
Discover
Search the live Companies House register with filters built for prospecting.
SIC industry codes
Combine up to five five-digit SIC codes to describe your ideal client sector precisely, such as 86230 dental practices or 43220 plumbing.
Location
Filter by a town, city or postcode in the registered office address to build regional or local lists.
Incorporation date
Set a “from” and “to” date to find newly incorporated companies or businesses that have been trading for years.
Active companies only
ClientFinch only lists companies whose legal status is exactly “Active” — no dissolved, liquidation, administration or proposal-to-strike-off records. An active legal status does not guarantee a business is trading.
02
Research
Work out what a business actually needs before you reach out.
Company profiles
Company name and number, status, company type, incorporation date, registered office address and SIC codes with plain-English descriptions.
Official record link
Jump straight to the company’s page on the Companies House service to review filing history, officers and accounts.
Opportunity research guides
Step-by-step guides to checking a prospect’s website, page speed, technical SEO and search visibility with free tools.
Website opportunity analysis
For companies with a Verified Website: a website review that surfaces clear, evidence-backed improvement opportunities for agencies, each with a supporting link. Limited rollout — analyses are added daily, so not every company has one yet.
03
Act
Turn research into a list of qualified opportunities.
Opportunity notes
Write down the specific gap you spotted and what you would pitch, right next to the company, so the context is there when you follow up.
Saved leads
Save companies to your shortlist in one click and remove them when they are no longer relevant.
CSV export
Export saved leads with company number, date saved, notes and a Companies House link for your CRM or spreadsheet.
Synced across devices
Your saved leads and notes are stored against your account, so they are there on any device you sign in on.
Private and secure
Verified email sign-in, hashed passwords and strict account separation — only you can see your saved leads and notes.
About the data
Official data, honestly described.
Every real result comes from the Companies House Public Data API and contains public sector information licensed under the Open Government Licence v3.0. That makes it the most complete free source for UK limited companies and LLPs — with a few limits worth knowing.
3,000 UK Companies with Verified Websites · 119 Analysed Companies (legally active on the Companies House register, updated 11 October 2026).
- Sole traders and most partnerships are not on the register.
- Registered office addresses are sometimes an accountant or formation agent rather than the trading premises.
- SIC codes are self-reported by companies and can be broad or out of date.
- The register does not include email addresses, phone numbers or, for most small companies, turnover or headcount.
FAQ
Feature questions.
Is the search using real data?
Yes. Find Leads in your account searches the live Companies House register, the official record of UK companies.
Can I search without a company name?
Yes. You can search on filters alone — for example every active company with SIC code 69201 in Leeds — or combine filters with a name.
Does ClientFinch show contact details?
No. ClientFinch shows company-level information from Companies House. It does not supply email addresses or phone numbers.
Does ClientFinch analyse prospect websites?
Yes. For companies with a Verified Website, ClientFinch surfaces evidence-backed website improvement opportunities you can use in your pitch. Analyses are added daily, so not every company has one yet, and our guides also show how to research websites manually.
Free account · No card needed
Go find them.
Create a free account to search the Companies House register and build your shortlist — the first companies are free to explore.