From Hemel Hempstead, enter Bovingdon through Box Lane (B4505). Go straight on over the double mini round-about by the Halfway House Pub then straight over another mini round-about. Take the next left, sign-posted Bovingdon Green, and then an immediate left. Go straight on until the road begins to turn sharply to the left, at which point turn right into the car park entrance. From Chipperfield, enter Bovingdon via Chipperfield Road, turn left at "The Well", opposite The Bull & The Bell pubs onto Green Lane. Carry on past a bus-stop on your left until the road begins to turn sharply to the right, just before which, turn left into the car park entrance.