You can park on Ingleberry road here:
There is an abandoned caravan visible from the road.
Avoid this if the field is in use.
Hop over the gate and go straight up the side of the field, follow it round to the right at the end, heading towards the din of the M1, you will see visible rock ahead, the crag is behind this rock.
Alternatively parking further up the road towards the Motorway bridge. It is possible to bushwhack through the trees parallel to the motorway.