 Ocado Group PLC LSE:OCDO issues a profit warning as it said the trading environment has deteriorated for its UK joint venture with Marks and Spencer Group PLC LSE:MKS due to the surging cost of living and a return to lower levels of online grocery shopping from pandemic highs. The Ocado Retail joint venture said underlying profits EBITDA were now expected to grow in low single digits rather than the 10 previous guidance, following an 8 fall in sales in the second quarter. 