The Old Williamsonians Rugby Club play their home matches and train at the Rochester Mathematical School in Rochester, Kent. The site boasts four rugby pitches, an all weather pitch with floodlights,an indoor heated swimming pool, an indoor hall, gym, football pitch and two cricket pitches.
This accomodates for the whole of the Old Williamsonian Club not just the rugby section. In recent years all sections have supported each other with annnual events and the club move forward with a cooperative approach.