You may already know what a 404 Page is. One of the most common errors you can come across while browsing the Internet is a 404 or Page Not Found error. This error often occurs when you follow a broken link or if you type in a website address that doesn’t exist. … A 404 page is a page that explains that a 404 error has occurred.
These are usually quite dry, humourless affairs – not Labour’s, check it out below