From the M40 Northbound:

Leave the motorway at Junction 8 (signposted Oxford) and join the A40. Continue along this dual carriageway and at the first roundabout take the third exit and continue North along the A40. Continue straight across the next roundabout and at the next roundabout turn right onto the A44 (signposted Woodstock, Evesham). Continue along this road, (passing under the A34 and through Woodstock) for approximately 12 miles to the village of Enstone. After passing a petrol station on the left continue through the village for 1/2 mile. At the bottom of the hill turn right at the Harrow Public House into “The Drive” to the crossroads and the entrance to Heythrop Park will be seen immediately facing you.

From the M40 Southbound:

Leave the motorway at Junction 11 (signposted Banbury) and continue towards Banbury. After crossing over the next two roundabouts at the third roundabout take the first exit left onto the A361 to Chipping Norton. Continue through a series of traffic lights and straight across the next roundabout (Banbury Cross). After a short distance turn right at the traffic lights (signposted A361 Bloxham) and continue aiong the A361, passing through the villages of Bloxham and South Newington, for approximately 11 miles. Do not take the first road signposted to Heythrop Park but continue to the roundabout (next to the Little Chef) take the first exit onto the A3400 (signposted Enstone, Woodstock (A44). Continue along this road (which after 1 mile becomes the A44) for 4 miles to the village of Enstone fork left onto the B4030. Continue along this road for about 250 yards and the entrance to Heythrop Park will be seen set back off the road on the left hand side.