 Ocado Retail, the joint venture between Ocado Group PLC LSE:OCDO and Marks and Spencer Group PLC LSE:MKS, has warned it expects a fall in sales this year following a decline in trading in recent weeks as customers trade down and put fewer items in their baskets. Even though customer numbers are up, the online food retailer warned that full-year sales in 2022 will decline, with EBITDA close to break-even as cost headwinds, predominantly from rising prices of energy and dry ice, are likely to weigh on profitability in the fourth quarter. 