Companies Open House
The government's www.companieshouse.gov.uk website doesn't have a permanent URL for each registered company, and is shut between midnight and 7am.
Companies Open House is an app that parses company data and gives you a nice page with the basic details about each company at a permanent URL. From that page, you can get to the company details on the government's site (provided it's open) via a link that redirects you one of their temporary session URLs.
Through Companies Open House's restful API, you can search for and obtain company details from within other applications. For example, you can lookup company details via Google spreadsheet's ImportXML() function.
Companies Open House ie is always open 24/7. You can use each company's permanent URL as an unambigious indicator when making inferences about a company on the Web.
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