Hi Roger, yes I have seen this video before thanks for posting. This goes up Scaly Gate, but it's now closed off with big concrete blocks to stop 4x4's and scramblers churning up the road.
I have driven up up Hurst Lane which is still just accessible but I'm glad I was in the Defender with the suspension raised, as most SUV's would struggle to get up there due to massive potholes and rocks in the road. The best way to access the land is coming up Intake Lane. (thanks to @Douglas Enwright
for pointing this out to me!)