The public was warned that what had been uploaded to You Tube would not last very long before being removed, I assume for copyright reasons. It is a BBC documentary detailing the history of London's undergound train system. I wanted to see it but I did not have an hour to spare and I hated the thought of missing the show if it was removed.
Then I remember Kiss, which allows you to save a You Tube clip to your hard drive, or any other drive for that matter.
This is the url copied from the You Tube clip.
remove the front bits.
add kiss in front and then hit your enter key
You are redirected to a site called Fetch Video and a button pops up and you need to select Run.
Then on the site you can see the links to download in varying qualities, so follow your normal method to download by right clicking etc.
Hey presto, depending on internet speeds, you should shortly have the video to keep and watch at your leisure. The morality of it is for you to decide. I have decided on the morality of geoblocking and gouging Australian pockets with usurious prices for imported goods.