The Portsmouth Grammar School Sports Centre opened as a proprietary licensed club in October 1989. The centre's facilities comprise of a main sports hall, three squash courts and a licensed bar, which is open to the community during evenings and weekends. In 2001 the upstairs area was extended and refurbished to incorporate a fitness suite comprising of Powersport equipment and the bar area was moved into the new extension above the main entrance. New lighting was added to the sports hall in 2004 and a new taraflex floor was laid in 2005. Details of sports hall activities and the fitness area are available on this site.

The Centre is also the home to Portsmouth Squash. There are a number of teams which compete in the Hampshire League, Men’s and Veterans. Portsmouth Squash have had a team in the Premier Division since 2001 and have had world and nationally ranked players in the side since that time.