Need help remembering a UK kid's dinosaur program with song?

So when I was a kid in the early 90s i remember watching a VHS tape cartoon/show/documentary about dinosaurs, the most memorable thing was that it contained this very British sounding song with a posh sounding guy singing all the different names of the dinosaur types, I believe the dinosaurs were realistic looking but made out of plasticine with stop motion and that there was a time frame running below the song. I know it's not much to go on and I doubt anyone else saw this, and honestly the tape could of been made in the 70s or 80s and I may of just watched it in the 90s.