While I'm on the subject of Companies House, how about this one?:

If you are at the WebFiling screen where it asks you to enter your
company number and authentication code there is a HELP box on the
right hand side of the page. If you click on that you get a window
headed "Help - Frequently Asked Questions" Scroll down to "26 -
Company Accounts" and then go to "26.14 Do I have to keep a paper
copy?".Underneath it says: "Yes, copies of all company documentation
must be kept for a minimum of 10 years."

This is not true.