Sunday 28th August â€“ Monday 29th August. Â Castle Field, Southsea. Â 10am â€“ 5pm. Â A family fun day in support of BASICs (the organisation that the Doctors who fly with HIOWAA volunteer with). With Entertainment, zumba displays, trade stalls and displays involving all the Emergency Services, including an extrication display throughout the day, there is something for everyone at this event.