At the time of writing (18 May) there is a road closure at Cuttmill Pond on Suffield Lane (work has stopped as there is a nesting grey wagtail), all traffic to the car park has to come through Puttenham.
From A3/M25 Junction drive south on A3 towards Guildford for about 14 miles, come off A3 on to A31 towards Farnham, after 1.9 miles take B3000 towards Godalming, turn left onto B3000/ Puttenham Hill then right after 0.3 miles onto The Street. After 0.2 miles turn left on to Suffield Lane, continue for 1.3 miles, then turn right into the car park.