This is a website which charges you for something which is available free. The official government website allow you to apply online for the European Health Insurance Card. The scammers on this site allow you to fill in the application which they transmit to the official website, and charge you for it.

This site carries a logo which is an imitation of the British Crown found on official UK government websites. It sells information harvested from the official government website, most of which is free. The official government website is https://www.gov.uk/get-information-about-a-company (also known as "Companies House). Note the official domain is "gov.uk" which indicates a genuine official site.

This company is a bookseller that operates on ebay. Some of their listings for books cause a pop-up to open asking for your username and password. The IP address of the server is 81.145.172.34
For example,
http://www.ebay.co.uk/itm/Attack-Warning-Red-History-of-the-Royal-Observer-Corps-Wood-Derek-Good-Condi-/361574360923?hash=item542f82e75b:i:361574360923
triggers the popup

It looks to me like a malware site

it opened a window for some miracle drug or supplement, that tried to prevent me closing the window.

my friend's hotmail account sent out lots of emails to people from her addressbook when when her PC was switched off. This URL was in the email