Leave the M25 motorway at Junction 10 and take the A3 dual carriageway South-West, signposted to Guildford and Portsmouth.
After one mile leave the A3 at the exit signposted to Ockham, Send and Ripley (B2215), and at the exit roundabout take the second exit off (signposted to Ripley).
Drive through Ripley into the centre of the village. Immediately after traffic lights (actually a pedestrian-controlled crossing), turn left into Rose Lane.
Then take the next turning on the left into White Hart Meadows. Octagon House is the first building on the left.