If coming from Ely direction towards Mepal on the A142 just past the roundabout for Sutton, pass the far end of the treeline on the left of the road, then there is a gap before two low bollards at the entrance to a public footpath. The entrance to the range is through a gate just after the bollards.
If coming from the Chatteris direction the entrance will be on your right. The A142 on this stretch is very busy - be aware of fast moving traffic at all times, before making your turn.
When you pass through the entrance proceed along the concrete track as indicated in RED on the photo.
Note: There is 10 MPH speed limit on the entire track to the range.