Whilst editing another video, I've accidentaly hit a shortcut which I did not know about which has made the program bar at the top disappear completely. I can't seem to find a way to get it back. I've tried CTRL+L, CTRL+/, as well as the previous shortcuts with LSHIFT. Resetting my workspace did nothing either. Here is an image of what is missing
Your subject line says "Toolbar has disappeared" and if that's indeed what you are missing then you should be able to bring it back by clicking on the "Window" menu in Premiere Pro and pulling down to "Tools" and it should reappear.