THE fate of a further 300 Mothercare staff has been thrown into doubt after it emerged that a key plank of the retailer's restructuring plan was rejected by creditors. Mothercare said on Monday that rent reduction proposals for Childrens World, a subsidiary that houses 21 of its stores, had been knocked back by landlords following a vote last week. The retailer is now considering "all options" for the unit, including shutting the outlets.