Resurgent high street giant Marks & Spencer continued its revival on Tuesday as it posted a huge jump in first half profit on the back of soaring lingerie sales and a shift to cheaper overseas suppliers. The company said profit for the six month period surged nearly 30 per cent year-on-year to a better-than-expected £287 million excluding exceptional items, with turnover climbing 7.9 per cent to nearly £3.7 billion.