At Waitrose, total divisional sales (excluding fuel) were up by 4.7 per cent, compared with the same week last year.
Food to go sales performed strongly, up 10.5 per cent. Finance director Loraine Woodhouse said: "The summer sunshine and the sporting spectacles in Rio have been inspiring people to head outdoors, with outdoor living up 24 per cent and sun creams up 37 per cent. Fresh produce continued to show strong sales, up 9.6 per cent, as customers picked up British seasonal fruit and veg such as sweetcorn (+six per cent) and cherries (+36 per cent).
John Lewis sales were +1.3 per cent on the year at £72.9m, with Outdoor Living products finishing the week at +64.6 per cent.