The sand coloured one in the still is a G, like the Bovington Panther (brass plaque on glacis telling us it was REME built), but unlike Bovy, it doesn't have the mantlet chin to prevent a strike on the lower mantlet reflecting through the hull roof and hatches.
I didn't bother watching the video.
Edit. I take it back. Google shows the Bovy G doesn't have a chin either.