Have been using mixture of ASDA, Waitrose and Tesco; generally get about 95% of order. Recently switched to Sainsbury’s to replace Tesco and Waitrose because booking delivery slots was impossible. Unavailable stuff about the same from Sainsbury’s. Final Waitrose delivery was about only 60% of order. Delivery driver said shelves in shop were virtually empty. Most difficult thing to get at present is DIY Crispy Chinese Roast Duck, Gressingham or otherwise. Entirely inconsequential of course, but why is there a run on it?