When I was about 9/10 years old, my family had a Universal Studios promotional video from 2003 which was hosted by Rowland Rivron. I’m not sure if it was ever released onto DVD as we had it on VHS, but the only record of its existence that I can find is this forum post here: www.thedibb.co.uk/forums/showthread.php?t=1157157
This definitely existed but I sadly no longer own a copy, and as it isn’t currently archived anywhere I’d say it could be considered to be “Lost Media”