The A338 is a major primary route in southern England, that runs from the junction with the A35 at Poole in Dorset to the junction with the A420 at Besselsleigh in Oxfordshire, a distance of 84 miles (135 km).

The A35 is a major road in southern England, connecting Honiton in Devon and Southampton in Hampshire. It is a trunk road for some of its length. Most of its route passes through Dorset and the New Forest. It originally connected Exeter and Southampton, the original A35 ran along what is now the A3052 joining the present road at Charmouth.