Considering the amount of running around you have to do as a parent during the average day, an extra fifty yards walk to the entrance of Sainsburys is utterly meaningless, should the parent parking be located further away. There's nothing 'essential' about it whatsoever. Parent parking away from the entrance, with a stack of kiddy-trollies laid-on special, makes sense. Then we can have even more room to accommodate parents who insist on eight foot wide six-wheel-drive cars with pumped-up suspension and bull bars on the front (also essential for urban living, it seems)