UK Company Information Free Sites company-information.service.gov.uk - free UK director & company information from Companies House company-information.service.gov.uk - advanced search page from Companies House company-information.service.gov.uk - free Companies House search site for companies dissolved between 1989 and 2009 company-information.service.gov.uk - free UK disqualified directors register search on Companies House company-information.service.gov.uk - UK Companies House Advanced Search page companycheck.co.uk - searchable database of UK Companies & Directors, with lots of free information pomanda.com - searchable database of UK Companies & Directors, with lots of free information northdata.com - searchable database of UK Companies & Directors, with lots of useful free information londonstockexchange.com - lots of useful company information for UK registered / traded companies vat-search.co.uk - allows you to search via a company name or location for companies with UK vat numbers (plus all other EU countries) vat-lookup.co.uk - allows you to search via a company name or vat number to find out company vat details, for the UK & Europe, not every company is covered by plenty are gov.uk - allows you to search a UK VAT number to see which company it was issued to dnb.co.uk - site allowing a free company search to locate their Dun & Bradstreet DUNS Number
Paid For Sites creditsafe.com - limited & non-limited company reports covering the whole of the UK and also the Republic of Ireland & others nexok.co.uk - allows you sign up for a free account to search for and access UK company information, with additional foreign company information available at a price
Other Useful Free Sites For Researching UK Companies ico.org.uk - searchable database of Register of Data Controllers (DPA licence holders) fca.org.uk - database of the FCA Consumer Credit Register, searchable by name & post code etc fca.org.uk - database of Mutual Societies (which can include Housing Associations) registered with the FCA thegazette.co.uk - searchable postings relating to current & historic UK company information ipo.gov.uk - locate a UK trade mark by the company / holders name or postcode ipo.gov.uk - search for a UK trade mark importyeti.com - search a UK company to see its American suppliers and delivery details
Irish Company Information cro.ie - Irish company information rbo.gov.ie - new Irish register of the directory of beneficial ownership of companies cro.ie - Irish disqualified directors register vision-net.ie - Irish business directory solocheck.ie - register for an account, then you can access free Irish company & directors information
Useful International Company Information / Business Tools Free Sites companieshouse.gov.uk - links to different company registries from around the world disputesregister.org - links to different company registries around the world ebra.be - links to different company registries from around the world molfar.com - useful site, with links to different business registers around the world b2bhint.com - useful searchable site for registered businesses around the world opencorporates.com - free basic company information from many places around the world icij.org - a database from the International Consortium of Investigative Journalists, containing ownership information about companies in a number of offshore jurisdictions, includes those known as the Panama Papers & the Paradise Papers occrp.org - the database from the Organized Crime and Corruption Reporting Project (OCCRP) provides links to public data sources that are company related, shown for nearly every country occrp.org - a useful online resource of global archived research material on many international businesses from the Organized Crime and Corruption Reporting Project (OCCRP) corporationwiki.com - allows you to find relationships between companies & people annualreports.com - a site with over 70,000 annual reports from over 5,000 different international companies, searchable by company name opensupplyhub.org - a site with an international search function for supply chains, companies & facilities importyeti.com - search a company to see its suppliers and delivery details gleif.org - legal entity identifier searchable database vat-search.eu - search via a company name or location for EU companies with vat numbers smallbusinesspro.co.uk - details of how different countries VAT numbers are formed bloomberg.com - search for information on over 40,000 public and 300,000 private companies worldwide northdata.com - searchable database of Companies & Directors from around the world, with lots of useful free information youcontrol.com.ua - searchable database of Companies from around Europe exa.ai - a useful site for searching company domain names explee.com - a useful AI site for searching company information
Paid For Sites icpcredit.com - international credit status reports on registered companies info-clipper.com - business information for a wide selection of countries around the world infocreditgroup.com - business & credit information for a wide selection of countries around the world
Australia asic.gov.au - Australian searchable registers of many different company registers, including those banned & disqualified persons in relation to the business & finance industry asic.gov.au - searchable Australian company details business.gov.au - free searchable site of the Australian Business Register
Bahrain sijilat.bh - searchable database for Bahrain's business registries sijilat.bh - searchable database for Bahrain's agency registration bahrainbourse.com - details of listed Bahraini companies
Canada canadasbusinessregistries.ca - searchable database for Canada's business registries ic.gc.ca - searchable database for Canadian federal corporations
Channel Islands jerseyfsc.org - searchable database for companies registered in Jersey guernseyregistry.com - searchable database for companies registered in Guernsey
Cyprus gov.cy - searchable database for companies registered in Cyprus i-cyprus.com - searchable database for companies registered in Cyprus cyprusregistry.com - searchable database for companies registered in Cyprus
France lefigaro.fr - searchable database for companies registered in France but the site is in French pappers.fr - searchable database for companies registered in France but the site is in French societe.ninja - searchable database for companies registered in France but the site is in French inpi.fr - searchable database on trademarks, patents, models and industrial designs registered in France journal-officiel.gouv.fr - searchable database of the National Association Registry, allowing access to legal information about associations registered in France infogreffe.fr - searchable records of legal (juridical and administrative) records for companies registered with the French Trade and Companies Register
Gibraltar companieshouse.gi - searchable database for companies registered in Gibraltar
Hong Kong databasesets.com - Hong Kong companies details gov.hk - Hong Kong compulsory winding-up of companies & bankruptcies database
India zaubacorp.com - allows you access basic company details and to download useful company reports & documents for mostly Indian based companies indiancompany.info - allows you access to the standard company & director information for Indian registered companies
Isle of Man gov.im - searchable database for companies registered in the Isle of Man companieshouse.im - searchable database for companies registered in the Isle of Man
You can request a Directors search to be undertaken by a name only for any Isle of Man registered companies by Emailing a requests Here
Korea koreabr.com - searchable database for companies registered in South Korea
Kuwait moci.gov.kw - searchable database for companies in Kuwait boursakuwait.com.kw - details of listed Kuwaiti companies e.gov.kw - searchable database for business services in Kuwait
Mauritius onlinesearch.mns.mu - allows you access basic company details for companies registered in Mauritius fscmauritius.org - allows you access details from the Register of Licensees at the Financial Services Commission in Mauritius systemday.com - allows you purchase & download additional details of companies registered in Mauritius
New Zealand nzbn.govt.nz - search for New Zealand registered companies business.govt.nz - search a company name to see if it is used by an New Zealand companies
South Africa sacompany.co.za - paid for site allowing you to search for South African registered companies by name, to obtain company details windeed.co.za - paid for site allowing you to search for South African registered companies by name, to obtain company details
Spain legalmondo.com - details on how to find company information in Spain strongabogados.com - details on performing a company search in Spain thekyb.com - details on how to verify a company in Spain infoempresa.com - search for full business information on Spanish companies and directors
UAE economy.ae - searchable database for companies registered in the UAE
USA sec.gov - searchable database for companies registered in the USA
EU Registers Of Beneficial Owners Of Companies / Legal Entities openownership.org - search over 12million beneficial ownership records from around the world
The following were taken from an article at blockint.nl by Ludo Block. Most of the links to these countries sites are free to search but are not in English.