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Description
Search UK companies on Companies House. View directors, filings, and auto-detect company numbers on any webpage. What is Companies House Lookup? Companies House Lookup is a Chrome extension that gives you instant access to the UK's official company register — without ever leaving the page you're on. Powered by the Companies House API, it automatically identifies the business behind any website you visit and surfaces their registered details in a clean, tabbed popup. Why does this matter? Every day, thousands of professionals in the UK need to quickly verify a company's registered details — whether they're a recruiter vetting a new client, a salesperson qualifying a prospect, a lawyer doing due diligence, or a finance professional checking a supplier. The current process involves opening a new tab, navigating to the Companies House website, typing in a search query, and sifting through results. It's slow, repetitive, and breaks concentration. Companies House Lookup eliminates all of that. It reads the URL and page metadata of whatever site you're visiting, intelligently extracts the company name, and queries the official register in real time. The result is a rich, organised summary delivered in under two seconds — right in your browser toolbar. Smart matching technology Unlike a simple search bar, Companies House Lookup uses intelligent name extraction to find the right company. It strips domain extensions, removes common corporate suffixes, reads the page title and Open Graph metadata, and scores results by similarity so the best match always appears first. Whether you're visiting bisonrs.com, bison-recruitment.co.uk, or bisonrecruitment.com, the extension knows to search for "Bison" and surfaces the correct registered entity. Comprehensive company data Once a company is matched, you get the full picture across four organised tabs: Overview — registered company name, company number, incorporation date, company type, SIC industry codes, current status (active or dissolved), and registered office address. Officers — a full list of current directors and company secretaries, including their role, appointment date, and nationality. PSC (Persons with Significant Control) — who ultimately owns or controls the company, their nature of control, and the date they were notified. Essential for AML checks, due diligence, and understanding corporate ownership structures. Filings — the five most recent documents submitted to Companies House, including confirmation statements, accounts, and any changes in structure or ownership, all with filing dates. Save, track, and export Companies House Lookup isn't just a lookup tool — it's a lightweight company intelligence workspace. Every company you look up is automatically added to your history. You can save companies to a watchlist with a single click, and export either your full history or your watchlist to CSV at any time. All data is stored locally in your browser using Chrome's secure storage — nothing is sent to external servers. Who is this for? Recruiters and staffing agencies who need to verify client company details before placing candidates or signing contracts. Sales and business development professionals who want to qualify prospects and understand ownership structures before outreach. Legal and compliance teams performing AML checks, KYC processes, or general due diligence. Finance and accounts payable teams verifying supplier details. Journalists and researchers investigating UK businesses. Anyone who regularly deals with UK companies and wants verified information without leaving their workflow. Privacy and data Companies House Lookup only queries the official, publicly available Companies House API. Your API key is stored securely in Chrome's sync storage and never transmitted to any third-party server. No browsing data, personal information, or search history leaves your device. Getting started Install the extension, click the settings icon to enter your free Companies House API key (available at developer.company-information.service.gov.uk), and you're ready. Visit any company website, click the toolbar icon, and your first lookup takes less than two seconds.