In the key run-up to Christmas, bosses are set to announce a 7.1 per cent leap in clothing and home sales plus a 4.6 per cent rise in food sales. The half-year figures to the end of September come after M&S trailed resilient demand from customers returning to stores.
Its Christmas TV advert, reuniting Dawn French and Jennifer Saunders as Fairy and old toy Duckie, is likely to help to maintain momentum.
M&S has seen its shares slip as rocketing costs and pressure on households dented performance.
But Investec analysts expect bosses to highlight “solid sales progress” at the update on Wednesday.