UK Company Search & B2B Company Lists
firmlist is a UK company search and data platform built on official Companies House records. It allows you to search, filter, and export lists of UK companies using meaningful business signals — not vague keywords or scraped website data.
Use firmlist when you need clarity, structure, and accuracy in UK company data.
Go deeper than Companies House
Add LinkedIn profiles, Facebook and social media, websites, email addresses, employment histories, and growth signals for companies and their people. Generate lists for direct mailings targeting the key decision makers.
DEEP Research Companies
LinkedIn company pages, funding rounds, employee counts, growth rates, revenue estimates, and talent flow data.
Learn more →DEEP Research People
Officer LinkedIn profiles, photos, education history, professional skills, and employment backgrounds.
Learn more →Direct Mailing
Ready-to-upload CSV files for Stannp, ClickSend, Intelliprint, and Docmail direct mail campaigns.
Learn more →Search UK Companies Using Real Business Signals
firmlist lets you filter companies using attributes that actually matter for research, compliance, and B2B work, including:
- Company type (LTD, LLP, PLC, CIC and more)
- Industry classification (SIC codes)
- Company status (active, dissolved, insolvency cases)
- Location and postcode prefixes
- Incorporation date and company age
- Directors and officers, including resignations and disqualifications
- Company accounts and financial data
- Charges and mortgages, dormancy and insolvency indicators
- Insolvency cases and distress procedures
- Dormant companies and what dormancy means
Every filter is based on official public register data, not assumptions or inferred signals.
Built for Research, Compliance & B2B Targeting
firmlist is designed for people who need to understand companies, not just find names.
Common use cases include:
- Building B2B lead lists with clear inclusion and exclusion logic
- Market and sector research
- Due diligence and risk screening
- Compliance, insolvency and governance analysis
- Identifying newly formed or long-established companies
- Filtering out dormant or non-trading entities
Whether you're exporting data for analysis or researching individual companies, firmlist prioritises transparency and control.
Why firmlist Is Different
Many UK company databases focus on surface-level results. firmlist focuses on explainable structure.
- Filters are documented and clearly defined
- Company attributes are explained, not hidden
- Data comes directly from Companies House filings
- You can understand why a company appears in your results
This makes firmlist especially useful when accuracy matters more than volume.
Learn How to Use UK Company Data Effectively
firmlist includes detailed guides explaining how Companies House data works and how to use it properly, including:
- Company types and legal structures
- SIC codes and industry classification
- Company status, insolvency and dormancy
- Company officers, resignations and disqualifications
- Company accounts, balance sheets and dormancy indicators
- Charges, mortgages and secured lending
- Location, incorporation dates and business age
These guides help you avoid common mistakes and build better-quality searches.
Start Your UK Company Search
Use the search above to explore UK companies and apply filters based on your requirements. You can refine results, review company details, and export structured datasets for further use.
firmlist is UK-focused, data-driven, and built to scale with serious research and B2B workflows.
- New Company Registrations
- New / Updated Officers
- Charges / Mortgages
- Officer Disqualifications
- Accounts (Assets)
- Insolvency Filings
- Company Officer Resignations
- Existing Company Changes
- In Liquidation