Southern operates a train from Southampton to Segensworth hourly. Tickets cost $7 - $11 and the journey takes 17 min. Alternatively, First operates a bus from Southampton to Segensworth every 20 minutes. Tickets cost $3 - $4 and the journey takes 35 min.
From Southampton Central train to Swanwick. 17 min £5. From Southampton City Centre, Houndwell Park bus to Park Gate. 35 min £2. From Southampton taxi to Segensworth. 14 min £27. From Southampton drive to Segensworth. 14 min £1. From Southampton walk to Segensworth. 2 h 44 min.
Yes, there is a direct bus departing from Southampton City Centre, Houndwell Park and arriving at Park Gate. Services depart every 20 minutes, and operate every day. The journey takes approximately 35 mins.