From the M4 West
Exit Junction 17 onto the A350, passing through Chippenham, Warminster, Shaftesbury and Blandford, which leads onto the A31

From the M4 North
Exit Junction 13 onto the A34, passing through Newbury and Winchester joining the M3 at Junction 9 and leaving at Junction 14 to join the M27, which leads onto the A31

From the M4 East
Exit Junction 11 onto the A33, passing through Basingstoke joining the M3 at Junction 6 and leaving at Junction 14 to join the M27, which leads onto the A31

From the M25
Exit Junction 12 onto the M3, leaving at Junction 14 to join the M27, which leads onto the A31

From the South East
At Portsmouth the A27 and the A3 join the M27, which leads onto the A31

From the South West
At Exeter take the A30 to Honiton turning onto the A35, passing through Axminster, Bridport and Dorchester. Keep on the A35 to Bere Regis and then join the A31