Sherborne. Running west from London Waterloo to Exeter St Davids in Devon, it provides a service for those who live in the western districts of Dorset. The South West Main Line runs through the south at Bournemouth, Poole, Dorchester and the terminus at Weymouth. Additionally, the Heart of Wessex Line runs north from Weymouth to Bristol and the Swanage Railway, a heritage steam and diesel railway, runs the between Norden and Swanage. Dorset is one of the few counties in England not to have a motorway. The A303, A35 and A31 trunk roads run through the county. The A303, which connects the West Country to London via the M3, clips the north-west of the county. The A35 crosses the county in a west–east direction from Honiton in Devon, via Bridport, Dorchester, Poole, Bournemouth and Christchurch, to Southampton in Hampshire. The A31 connects to the A35 at Bere Regis, and passes east through Wimborne and Ferndown to Hampshire, where it later becomes the M27. Other main roads in the county include the A338, A354, A37 and A350. The A338 heads north from Bournemouth to Ringwood (Hampshire) and on to Salisbury (Wiltshire) and beyond. The A354 also connects to Salisbury after travelling north-east from Weymouth in the south of the county. The A37 travels north-west from Dorchester to Yeovil in Somerset. The A350 also leads north, from Poole through Blandford and Shaftesbury, to Warminster in Wiltshire. A passenger sea port and an international airport are situated in the county. Brittany Ferries and Condor Ferries, operate out of Poole Harbour; Brittany Ferries provide access to Cherbourg in France and Condor Ferries sail a seasonal service to the Channel Islands and St Malo, France. Poole, since the dredging of the main channel in 2008, and Portland harbours are capable of taking cruise liners. Bournemouth Airport, which is situated on the edge of Hurn village north of Bournemouth, has flights to 36 destinations and serves some 600,000 passengers a year. In August 2007 work began on a £32 million expansion programme which includes enlargement of the terminal building and an increase in parking. Morebus and Damory provide a county wide bus network with frequent services linking major towns, including Bournemouth, Poole and Wimborne, and a varied service in further rural locations. The First Group operate buses in the Weymouth and Bridport area, including: a regular route along the A35 from Weymouth to Axminster, which helps