SouthamptonSouthampton (/saʊθˈ(h)æmptən/ (About this soundlisten)) is a city in Hampshire, South East England, 110 km south-west of London and 24 km west of Portsmouth. A major port, and close to the New Forest, it lies at the northernmost point of Southampton Water, at the confluence of the River Test and Itchen, with the River Hamble joining to the south.50.9-1.4