Leave Reading heading north via Caversham Bridge. Immediately after the bridge, turn left onto Church Road (A4074), and follow this road up St. Peter's Hill. This road becomes Woodcote Road.
Follow the A4074 out of Reading, and stay on this road for approx 10 miles. Eventually you will come to a roundabout; turn right here towards Crowmarsh and Wallingford. At the next roundabout, go straight over, staying on the A4074.
Follow the road for another mile or so, and you will see a right turn into Benson; there is an area to turn right marked on the road. Turn right into Church Road, and at the end of Church Road, turn right and then immediately left onto the B4009 (Caution - the road is quite narrow here).
Follow the B4009 past the traffic calming and out of Benson. Go past the first two turns for Berrick and Roke, and take the third left turn, signposted for Chalgrove. (Caution - this road is narrow in places) At the end of this road, turn right at the T-Junction.
Follow this road into Chalgrove, and bear left at the end. Turn left into the High Street, and The Red Lion is on your right, opposite the village green. There is parking between the Post Office and The Red Lion adjacent to the Chalgrove Brook, or on the High Street itself.