south western railway (swr) is an english train operating company owned by firstgroup (70%) and mtr corporation (30%) that operates the south western franchise. it operates commuter services from its central london terminus at london waterloo to south west london. swr provides suburban and regional services in the counties of surrey, hampshire and dorset, as well as regional services in devon, somerset, berkshire and wiltshire. its subsidiary island line operates services on the isle of wight.