Gbp/usd - 1.5872...Cable rose marginally abv o/n NY high at 1.5892 to 1.5898 b4 retreating on long liquidation by st specs with some traders on the sidelines ahead of the release of U.K. GDP data at 08:30GMT (y'day's ratings downgrade by S&P caught the market by surprise ahead of the retail sales report). Bids fm various accounts (incl. Asian names) are tipped at 1.5820 n 1.5800 while offers are noted in the region of 1.5930-1.5950...