Kielder Forest Drive - Driving the UK - England - Northumberland 250

We've travelled south across the border and back into England to travel the Northumberland 250, a "250-mile adventure across the land of dark skies, rolling hills and remarkable coastline" which you can find out about here; northumberland...
One of the sections give you the option of driving the Kielder Forest Drive (£3 fee), a "spectacular 12 mile (19 km) drive on unsealed forest road, from Kielder Castle in the west to Blakehopeburnhaugh on the A68 in the east." www.forestryen...
If you're not sure about completing the drive in your vehicle, maybe you'd like to check out this video to see if it's doable for you.