I used to work from home (rented) and would only tell my regulars I lived there. To other clients I'd say it's a friends flat and she works away a lot and lets a few of us use it when she's not there, which is true of what I do now. Most shared ownership places have plaques outside advertising their company, so at least if the client doesn't believe that it's your apartment then if they turn nasty or stalkerish they won't see the point in doing anything against where you live. A lot of these shared ownership developments attract key workers, who often work long and irregular hours, and won't notice the goings on of your place. The only thing though is many of these developments at new builds with super thin walls, so scope out the bedroom for bordering rooms/flats.