Take
the A360 into the centre of Salisbury. Follow signs for Amesbury and
Stonehenge.
You will need to follow signs for Amesbury and pass through several roundabouts so that you are on the A345 heading north through the city.
You will pass out of Salisbury, past Old Sarum hillfort on your left, and after a few hundred metres you will come to a roundabout with the left hand turn marked for Amesbury and Stonehenge, the middle one for a Park and Ride facility and the right-hand turn marked The Winterbournes. Take this last turning.
Go straight over a smaller roundabout a hundred metres further on and continue for another four hundred metres where you will see a garage marked Ottons.
Take the right turning here and follow the road, which curves to the right, to the end. Wessex Archaeology is at the end of the road.