Asda's sales grew ahead of the sector, up by 6.1%, keeping its share steady at 14.0%. Tesco PLC (LON: TSCO ) saw its market share hit 27.2% as its sales rose by 3.9%. The second largest retailer, J Sainsbury PLC, pushed up sales by 4.3% this period. Convenience retailer Co-op increased sales by 3.5% and achieved 6.0% market share. Waitrose's market share was at 4.5% while Iceland's sales grew by 6.1%, as its share remained at 2.3%. Ocado's market share was slightly down at 1.7%, with sales declines concentrated in its traditional south east and London heartland.