Aquarius Sailing Club is situated on the Middlesex bank of the River Thames, between Hampton and Sunbury locks, 2 miles upstream of Hampton court and 300 yards upstream of Platt's Ait.

The entrance to the club is the Thames Water entrance off the Lower Sunbury Road at the East side of Sunnyside Reservoir.

Thames water insist that the entrance road gate is kept locked for security reasons however club members have access. For non-club members there is a speaker phone located to the right hand side of the gate which is directly linked to the AQSC clubhouse.