Exit the M25 at junction 6, take the A22 towards Croydon. Follow the A22 past Caterham to a large roundabout. Go straight across (3rd exit, labeled "Croydon") and continue down the dual carriageway that narrows to a normal road with one lane for each direction 1/3 mile further. The road will eventually take you directly into Whytelafe, where it becomes Godstone Road. House number 250 A will be to your left.
Turn right for convenient parking in the Station Road car park or turn left into the Godstone Road car park. Parking is free of charge for up to three hours.